| A&M | A & M Records | FEM | Folk Era Records | OLY | Olympic |
| ABC | ABC Paramount | FER | Fergal | ONT | On Town |
| ABL | Able | FFD | Felix & Formanger CD | OPS | Opus |
| ABM | A Brick Missing | FFR | Fiddle Factory (Peter Dawson) | ORM | Ormond Recordings |
| ACM | ACM Records | FID | Fiddler | ORP | Oxford Road Records |
| ACO | Acorn | FIS | Fidelity Sound Recordings | OSC | Osceola |
| ADA | Adanac | FKN | Folknet | OSS | Ossian |
| ADC | Alldisc Dist. Co. | FLG | Folk Legacy | OTG | Outer Green Records |
| ADV | Advent | FLT | Failte | OUE | Ouesteurne |
| AFD | Audio Fidelity | FLW | Folk Ways | OUT | Outlet |
| AGM | Ann Gray Music | FLY | Flying Fish | PAR | Parlophone |
| AIS | Aisling | FMC | Finmac Records | PAS | Passe-Temps |
| ALG | Allegro | FNN | Fonn | PAT | PatŐs Tracks |
| ALL | Alula | FOC | Focal Records | PAV | Pavee Point Travellers Center |
| ALT | Alta Musica | FOG | Fogarty's Cove | PBD | Patricia Brady Disk |
| ALU | Alouette | FON | Fontana | PBR | Push Button Records |
| AMB | Amber Music | FOR | Fortuna | PCH | Plough Chart |
| AMD | Ambassador | FOS | Finola O Siochru | PCI | PCI, Rochester |
| AMI | Amigal | FPR | Footprint Records | PEG | Pegasus |
| AMR | AM Records | FRH | Front Hall | PEL | Pelican |
| ANG | Angel | FRI | Fairway Records Inc.(CSP) | PER | Perwinkle Records |
| ANM | Ainm | FRM | Franco | PET | Peters Int. |
| ANR | Aniar Records | FRS | Free State Records | PGI | Pigeon Inlet |
| ANW | Anew Records | FSP | Footstompin' | PGN | Paragon |
| AON | A-One Music | FSR | Feenish Sound Recording | PGW | Pigs Whistle Music |
| APN | Apalkalips Now Music | FST | Fiesta | PHI | Philo |
| APO | Appleseed Recordings | FTK | Folktracks | PHL | Phillips |
| APX | Apex | FTW | Fleetwood | PHM | Poulaphuca Music |
| AQU | Aquitaine | FUS | Fuschia Music | PHR | Pheonix Rising |
| ARA | ARA | GAL | Gael Linn | PLA | Plamas |
| ARC | ARC | GAT | Gateway | PlA | Play |
| ARD | Authentic Recordings | GCM | Great Canadian Mus. | PLC | Prism Leisure Corp |
| ARH | Arhoolie | GDF | Gadfly | PLG | Polygram |
| ARN | Aran | GEF | Geffen | PLH | Playhouse |
| ARQ | Arabesqu | GEP | Great Eastern Prod. | PME | Paradigm |
| ARV | Arva Records | GGG | Gottagetgon | PMR | Pirate Moon Records |
| ARW | Archway Recording Co. | GGR | Grace Griffith | POI | Point |
| ASH | Ashton | GHN | Greenhays | POL | Polydor |
| ATA | Across the Atlantic | GHR | Golden Hill Records | POS | Posteritry |
| ATC | Attic | GIV | Given Music | POT | Potato |
| ATG | Atlantic | GLA | Glen Arm | PP | Prosper Records |
| ATL | Atlantic | GLB | Globestyle (Topic re) | PPP | Pied Piper Productions |
| ATM | Atomic Records | GLC | Glencoe | PRA | Paredon |
| ATP | Abbey Tavern Productions | GLD | Golden Hour | PRE | Premier |
| AUD | Audat | GLF | Gael Force | PRI | Prime |
| AUG | Aughrim | GLG | Golden Guiena | PRK | Park |
| AVA | Avalon | GLH | Golden Hill | PRL | Pearl |
| AVM | April Verch Music | GLM | Glens Music (Antrim) | PRM | Promenade |
| AVO | Avoca | GLN | Glenside | PRO | Parade |
| AVR | Avalanche Records | GLR | Gaia's Light Records | PRT | Prime Time |
| AXI | Axis, EMI | GMM | Great Maedow Music | PST | Passe Temps |
| BAN | Banff | GMS | Green Mountain Records | PUT | Putumayo |
| BAR | Bard | GNO | Gnome | PWK | Pickwick |
| BBC | BBC | GNO | Gnome | PXI | Pixie Records |
| BBR | Bay Boy Records | GNT | Greentrax | QLT | Quality Records |
| BCD | Borealis Recording Co. | GOI | Goilin | RAG | Raglan |
| BCH | Big Chief | GOU | Gourd | RAK | Racket Records |
| BCM | Black Crow Records | GPH | Gramophone | RAM | RAM |
| BCR | Blarney Castle | GPP | Glen Park Productions | RAN | Ranger Music |
| BDE | Bruno-Dean Enter.. | GRA | Grasmere | RBR | Reedblock Records |
| BEA | Beacon | GRB | Grab Entertianment | RBY | Red Biddy Records |
| BEL | Beltona | GRD | GRRR Records | RCA | RCA |
| BGM | Blue Grace Music | GRH | Greenhays | RCR | Red Chair Records |
| BGO | Beat Goes On Records | GRI | Grian | RDC | Rodoc |
| BHO | Janet Harbison, harp | GRL | Green Linnet | RDK | Radio Kerry |
| BIC | Biscuit City | GRN | Gransha | RED | Rossendale Records |
| BIM | Black Irish Music | GRP | Grapevine | REE | Reekie (R Browne) |
| BKM | Bookmark | GRT | GRT | REG | Rego |
| BKN | Bee's Knees | GSL | Grassland Productions | REI | Reiskmore Music |
| BKS | Buckshot | GTD | Galway Tape Dist. | REL | Rel Records |
| BKW | Breakwater | GTM | Guitarama Musique | REL | Release |
| BLB | Blackbird | GUA | Guardian | REQ | Request |
| BLD | Bull Dog | GUS | Gusto Records Inc. | RES | Reserve |
| BLK | Blackwater | GWM | George Ward Mulesong | REV | Revolving Records |
| BLO | Blue Note Records | HAL | Hallmark | RHP | Rhpsody |
| BLR | Bell Air Records | HAM | Harmonie (Columbia) | RIN | Ringsend Road |
| BLT | Beltane Records | HAN | Handcrafted | RIT | Ritz |
| BMC | Barra Music Co. | HAP | House Party Productions | RMM | Rosemount Music, Neagh |
| BMG | BMG | HAR | Harmac | ROB | Robin |
| BND | Banner Disks | HAW | Hawk | ROC | Rockland Promotions |
| BNG | Bing | HAZ | Hazel Records | ROD | Rodeo |
| BNJ | BNJ | HCR | Hot Conya Records | ROM | Romophone |
| BNR | Bar None Records | HDL | Headline | RON | Rounder |
| BNZ | Bonanza | HEL | Helvic | ROO | Rooster |
| BOD | Bowdencourt | HER | Heritage | ROS | Rose |
| BOG | Bog Fire | HGM | Home Grown Music | RQM | R Q Music |
| BON | Bonus | HGP | Harper Grove Productions | RRP | Rolling River Productions |
| BOR | Bottler | HIF | High Fort Records | RRR | River Run Records |
| BOT | Boot | HIT | Hit Records | RSE | Raymond Smyth Enterprizes |
| BOU | Levis Bouliane Inc. | HIT | Hit Records | RSL | Roseland Recording |
| BOW | Bowhand | HLM | Highlander Music | RSS | Ross |
| BPI | Barnaby Productions Inc. | HMB | Hummingbird | RST | Rusticana |
| BPR | Bonnie Pearl Records | HMV | His Masters Voice | RTE | RTE |
| BPR | Big Plain Records | HOL | Holborne Dist. Co. | RTK | R-Tek |
| BRG | Brownrigg | HON | Honest | RTM | Round Tower Music |
| BRI | Brio | HOS | Hearts O Space | RTP | Rick Tinory Productions |
| BRL | Brill Music | HOT | Hots Records | RVS | Riverside |
| BRO | Brouder Music | HPB | Harpbeat | RVY | Reavy Music, JMRM Prod. |
| BRT | Barratone Tnc. | HPP | Hairy Peoples Prod. | RWR | Real World Records |
| BSD | Boston Skyline | HRC | Hudson River Co | RYK | Ryko |
| BTB | BTB Records | HRM | Harmony | RYL | Royale |
| BTP | Beetle Productions | HSM | Hobo Star Music | SAG | Sage Arts Records |
| CAB | Cabaret | HSM | Harry Stottle Records | SAI | Sain |
| CAD | Can-Del Records | HSR | Homestead Studios,Randalstown | SAK | Seabhach |
| CAL | Calclan | HSW | Halshaw | SAL | Saloon |
| CAN | Dans tous les canton | HTL | Heartland | SAM | Silver Apple Music |
| CAP | Capitol | IAB | I & B Records | SAN | Sandcastle Records |
| CAR | Carnival | ICE | Icicle/Snocan | SAT | Sound as a Trout |
| CAS | Castle Island | ICM | Incarnation Music | SAV | Savanna |
| CAT | Catalogue | ID | Id | SBR | Square Biz Records |
| CAW | Canada Wide | ILE | Isle | SCH | Shillelagh Records |
| CBC | Canadian Broadcasting Corp. | IMM | Immigrants | SCL | Scala |
| CBE | Irish Folklore Com. | IMR | Inismor | SCM | Sea Cape Music |
| CBG | Cabbage | IMS | Inter Media Services | SCR | Stag Creek Records |
| CBM | Cross Border Media | INA | INAC | SDP | Stephen MacDonald Productions |
| CBS | CBS | INC | Inchecronin | SEE | Seeya |
| CBT | Cabot | INP | Intrepid | SEN | Sean |
| CBU | Caribou | INS | Inis | SER | Silver Eagle Records |
| CCE | Comhaltas | INT | Irish Records Int. | SEY | Seydenfaden |
| CCM | Canadian Country Music | ION | Iona | SFM | Sarahfiddle Music |
| CCM | Clachan Music (Custy,Co.Clare) | IRC | Irish Recod Co. | SFW | Smithsonian Folkways |
| CDM | Caedmon | IRD | Rover Records | SHA | Shanachie |
| CDR | Can-Del Records | IRI | Irish Records Inc. | SHM | Shamrock Connection |
| CDT | Clandestine | IRM | Irish Musician | SHR | Sham Town Records |
| CEC | Celestial Entertainment | ISL | Island | SHS | Shaskeen |
| CEI | Changewind Enterprises | ITM | ITMA (N. Carolan) | SIH | Silver Hill Records |
| CEL | Celtic | IWC | Irish Writers Center | SIL | Sail Records, Wexford |
| CEN | Centrum | IYE | Irish Eye | SKY | Skyline |
| CEO | Ceol | JAD | Jade | SLK | Silk Purse Records |
| CFM | Celtic Fire Music | JAP | June Apple | SLM | SLM Records |
| CFT | Craft Recordings | JAR | J. A. Records | SLR | Solar Audio |
| CGM | Canadian Grand Masters | JAY | Jay Records | SMA | Smashed |
| CHA | Denis Champoux | JBL | J & B | SMD | Smiddymade |
| CHA | Chacra Alternative Music | JMA | J McCormack Soc.KC | SMK | Shamrock (Ireland) |
| CHB | Celtic Heartbeat | JMP | Jim Martin Productions | SML | Stylus Music Ltd. |
| CHC | Coleman Heritage Center | JNR | John Nolan Records | SMP | Sampler |
| CHR | Chrysalis | JOU | Jouflu | SMW | Small World Music |
| CHT | Chart | JUR | Jury's (Dublin) | SND | Sound Records |
| CHY | Chyme | KAN | Terry Kane | SNO | Snocan |
| CIA | Ciara | KCE | Keltic Cross Entertainment | SOD | Sono Disque |
| CKT | Cork Kerry Tourism | KCR | Kodiak Cheyenne Records | SOL | Solo |
| CLA | Claddagh | KCT | Katharine Cornell Theater | SON | Sony |
| CLC | Clo Iar-Chonnachta | KEL | Kells | SOR | Saoirse |
| CLE | Cleaver Music | KET | Kettle | SOS | Somerset |
| CLM | Celtic Music | KEY | Key Records | SOU | Sound Recordings |
| CLO | Clode Sound | KIL | Killary Productions | SPA | Spoken Arts |
| CLR | Celtic Crossings | KIM | Kicking Mule | SPG | Spring |
| CLS | Clairseach | KIN | Kincora | SPM | Self Propelled Music |
| CMC | Casa Marie Records | KLA | Kila | SPN | Spin |
| CMP | Compose | KLB | Klub Records Ltd. | SPR | Springtyme |
| CMR | CMR | KLR | Kalero Records | SPT | Spartan |
| CNC | Celtic Note | KMG | Kilt Music Group | SPW | Springwater |
| CND | Condor | KOC | Koch Records | SRC | Sceilig Records |
| CNL | Colonial | KPM | Keigher Productions, Mayo | SRS | Shag Rock Sound |
| CNM | Connemara | KRB | Kerbstone | SSP | Sing Song Productions |
| CNT | Conatal | KRN | Kilronan Records | SSR | Sunshine Records |
| COB | Coby Records | KST | Krystal | STA | Starc |
| COL | Columbia | KSY | Kilshanny | STE | Stetson |
| COM | Compass | KTL | K-Tel | STF | Standfast |
| CON | Contour | LAG | Lagore | STO | Stoic |
| COO | Cool | LAN | Lannigan Records | STP | Stoney Pockets Records |
| COP | Copley | LAP | Lap Wing | STR | Saint Records |
| COR | Coral | LAR | Larraga | STY | Stoneway |
| COU | Country | LCA | Lib. Congress Archiv | SUF | Surf |
| CPB | Cappal Beag/Celtic Media | LEA | Leader | SUN | Sunbeam |
| CPH | Caplehouse | LEG | Legacy | SUR | Sunrise Media |
| CPL | Celtic Prime Leisure | LET | Le Tamanoir | SUT | Sutton |
| CRA | Cranford Pubs./Silver Apple | LFR | Local Fokel Records | SWC | SWC Productions, Nfld. |
| CRB | Curb | LIB | Liberty Records | TAI | Taisbean |
| CRD | Coordinate | LIN | Line | TAK | Taktic Music |
| CRU | Crubeen | LIR | Lir | TAM | Tamanoir |
| CSD | Cascade | LIS | Lismor | TAN | Tandem Records |
| CSP | City Spark | LIV | Livia | TAR | Tara |
| CSR | Clinkscale Stebelin Recording | LMS | Landmark Soc. Of Western NY | TBR | Tambor Recordings |
| CST | Castle | LNM | Longwalk Music | TCR | TC Records |
| CTL | Celtic Tales | LNR | Lazy Mist Records | TCS | Tarbert Comp. School |
| CTP | Candel Tune Productions | LOF | Lofty Music | TEE | Teevan Records |
| CTS | Coleman Traditional Society | LON | London | TEM | Temple |
| CUL | Culburnie | LOO | Lunar | TEV | Tee Vee (RCA Canada) |
| CUM | Cumberland Records | LRF | Larrikin (Australia) | THC | Tara Hill |
| CUR | Curragh | LSH | Lochshore | THI | Thistle |
| CVM | Cee Vee Music | LUG | Lughnasa | THR | Thran Records |
| CVY | Convoy Records | LUP | Lupins Records (Ca) | TIF | Tifton |
| CWR | CWR Ltd. (Dublin) | LYN | Lynwood Productions | TMK | Tidemark, NS, Can. |
| CYN | Cynda | LYR | Lyrebird | TMP | Teach Murray Pub |
| DAB | Dab Records | M56 | Mark 56 Productions | TNC | Tig na Coille |
| DAM | Dambusters | MAC | Mace | TNS | Transatlantic |
| DAN | Dane | MAP | Maple | TOB | Toby Productions |
| DAR | Dara (Irish) | MAR | Marathon Music | TOC | Torc |
| DAT | Darte | MCA | MCA | TOM | Tompo |
| DAZ | DAZ Discs | MCM | MacMahon Music | TOP | Top Rank |
| DBC | Disques Blue, Canada | MCR | Mercury | TOT | Totem |
| DBM | Dady Bros. Music | MCR | Mooncrest | TPM | Taylor Park Music |
| DCS | David Carpenter | MCW | McWhorter Records | TPP | The Pennywhistle Press |
| DDM | Dancing Druid Music | MED | Mead | TPS | Top Spin |
| DDR | Devil Dog Records | MEM | Memoir Records Ltd. | TRA | Tradition |
| DEC | Decca | MER | Mercier | TRC | Trans Canada |
| DEL | Delta | MET | Metero | TRD | Triad |
| DEM | Demon | MEX | Maritime Express | TRI | Tribune |
| DEN | Denver | MGD | McGonigle Davis | TRL | Trailer |
| DER | Derg Productions | MGM | MGM | TRN | Trinity |
| DEX | Disques Experience Records | MIL | Milstream | TRS | Triskel |
| DIN | Dingles Records | MJM | Major Minor | TTM | Three Two Music |
| DIP | Diplomat | MKT | Market Square Music | TTR | Two Twins Records |
| DIR | Direction | MMC | Maree Music Co. | TUG | Tugboat |
| DMI | Dist. Madecy Inc. | MMP | McLeod Music Productions | TUL | Tulip Records |
| DML | Delta Music Ltd. | MMR | Magnetic Music Records | TWN | Twin Records |
| DMN | Dolmen Records | MMS | Music Masters St. Louis | TWP | Third Wave Productions |
| DMP | Dave Mallinson Pubs | MMV | Mor Music | UCA | UCA Utica |
| DNL | Donlea | MNT | Monitor Records | UFO | United for Opportunity |
| DOC | Dock | MOA | Moanfin Recordings | ULT | Ultronic |
| DOL | Dolphin | MOC | Mairtin O'Connor | UNG | Unity Gain |
| DOM | Dominion | MOI | Moidart | UNI | Unicorn |
| DON | Doncaster | MON | Montagnard | UNI | Unisphere |
| DOO | Doorla | MOR | Morgan | UNV | Universal |
| DRA | Draguin | MP3 | MP3.com | UPR | Upros Music |
| DRC | Darach | MPL | Mapleleaf | URA | Ultra |
| DRD | Deidre | MRK | Mark | VAL | Valentine |
| DRG | Dargason Music | MRM | Miramichi River Productions | VAR | Varrick |
| DRK | Dynamic Recording | MRP | Mariposa Music | VAV | Viva (London) |
| DRM | Drumlin Records | MRR | Mud River Records | VEL | Velo |
| DRS | Dawros Music | MRS | Merry Sunshine | VEN | Venture (Virgin Records) |
| DSR | Dara (Scottish) | MSK | Musikelt | VET | Veteran |
| DUB | Dublin | MSM | Maggie's Music | VGR | Voyager |
| DWD | Duckworth Dist. | MSN | Mill Studios, Swords, Dublin | VIN | Vintage |
| DWL | Derek Warfield | MST | Morning Star | VIR | Virgin |
| E&R | Edel and Ronan | MTN | Metronome | VIV | Viva Voce |
| ECH | Echo | MUH | Murray Hill | VLY | Valley Entertainment |
| EGB | EGB | MUL | Mulligan | VNG | Vanguard |
| EJF | E J Farrell Music | MUR | McGill Univ. Records | VOY | Delyse Envoy |
| ELK | Elektra | MUS | Musicor | VST | Varsity |
| EMB | Ember | MYS | Mystic | WAL | Waltons |
| EMD | Emerald Isle | N2K | N2K | WAR | Warwick |
| EMI | EMI | N2K | N2K Records | WAV | Waverly |
| EMP | Earth Music Productions | NAR | Narada | WBL | Wildbeast |
| EMR | Emerald | NCM | New Century Music | WEA | WEA |
| ENC | Enchanted Music | NEV | Nevis | WES | Wesco Recording, Nfld. |
| ENG | Enigma Music | NIM | Nimbus | WEV | Weaving Records |
| EPI | Epic | NLF | Newlife | WEV | Weaving Records |
| EPO | Emporio | NOJ | Nojo | WHE | Workhouse Enterprises |
| ERI | Erin | NON | Nonesuch | WHI | Whirlie |
| ERK | Ernie King | NOR | Northstar | WHN | Whinstone Music |
| ERR | Errigal | NPU | Pipers Club | WHR | Whirling Discs |
| ERS | Erinson | NUA | Nuage | WIN | Windham Hill |
| ESP | ESP | NYA | Nyah | WKR | Wicklow Records |
| EVO | Evon | OAK | Oak | WMP | West Manor Productions |
| EVR | Everest Record Grp | OAT | Oats | WMT | Westminster |
| EXM | Excellent Music | OBM | Old Bridge Music | WOC | West O Clare Productions |
| FAW | Farm & Wilderness | OCP | Oregon Catholic Press | WOM | West Ocean Records |
| FCH | 4 Corners of Hell | OCR | O'C Records | WOR | World |
| FCR | Flowering Chestnut Records | OCT | October Eve Records | WRC | Canada Label |
| FDI | Franco Disque Inc. | OEN | Oenoke (J. Whelan) | WRN | Wren |
| FDS | Fiddlesticks | OGH | Ogham | WRR | West River Recording |
| FEL | Fellside | OKL | Oakleaf | XOP | Xenophile |
| OLH | Old Homestead | ZON | Zondervan Recordings |