| Master Apple Key | ||
| Symbol | Variety | |
| ADI | Adina | |
| AKA | Akane | |
| ASK | Ashmeads Kernal | |
| BEA | Beacoen | |
| BLG | Blushing Golden | |
| BNR | Binnet Rouge | |
| BRA | Breaburn | |
| BRD | Big Red Delicous | |
| BRS | Brown Snout | |
| BUG | Buckeye Gala | |
| CAM | Cameo | |
| CHE | Chehalis | |
| CHJ | Chisel Jersey | |
| COP | Cox Orange Pippens | |
| COU | Courtland | |
| CPP | Court Bendu Plat | |
| CRI | Criterion | |
| CRS | Crispin | |
| CYO | Commander York | |
| DAB | Dabinette | |
| DAY | Dayton | |
| DIS | Discovery | |
| DUC | Duchess | |
| ECO | Early Courtland | |
| EGD | Early Golden | |
| ELB | Ellis Bitter | |
| EMP | Empire | |
| EMR | Empress | |
| ENT | Enterprise | |
| ESS | Esopus Spitzenberg | |
| FAM | Famuse(Snow Apple) | |
| FRE | Freedom | |
| FRT | Fortune | |
| FUJ | Fuji | |
| GAL | Gala | |
| GDR | Gold Rush | |
| GGL | Grand Gala | |
| GGO | Ginger Gold | |
| GOD | Golden Delicous | |
| GOR | Golden Russet | |
| GRA | Grandspur | |
| GRG | Grimes Gold | |
| GSP | Golden Supreme | |
| HAR | Harrel Red | |
| HAZ | Hazen | |
| HGG | Hudsons Golden Gem | |
| HOG | Honey Gold | |
| HON | Honeycrisp | |
| HYM | Harry Master | |
| IDA | Idared | |
| IDM | Ida Red Marquis | |
| IGA | Imperial Gala | |
| IRD | Imperial Red Delicous | |
| IRM | Imperial Red Mcintosh | |
| JAM | Jonamac | |
| JAR | Jon a Red | |
| JLI | Jonaliscous | |
| JMC | Jersey Mac | |
| JOF | Jonafree | |
| JOG | Jonagold | |
| JON | Jonnee | |
| KEP | Keepsake | |
| KOR | Kidds Orange Red | |
| LAR | Law Rome | |
| LEL | Luster Elstar | |
| LIB | Liberty | |
| LOD | Lodi | |
| LRE | Laura Red | |
| MAC | Macspur | |
| MAD | Madoille | |
| MAJ | Major | |
| MAM | Marshell Macintosh | |
| MAN | Mancoun | |
| MAT | Manet | |
| MCH | Michelin | |
| MCI | McIntosh | |
| MDE | Mollies Delicous | |
| MEL | Melrose | |
| MLR | Melrouge | |
| MUT | Mutsu | |
| NEP | Newtown Pippin | |
| NIT | Nittany | |
| NSP | Northern Spy | |
| NWG | NorthWest Greening | |
| NY6 | NY674 | |
| OGO | Ozark Gold | |
| ORT | Ortley | |
| PIM | Pioneer Macintosh | |
| PIP | Pink Pearl | |
| PNL | Pink Lady | |
| POR | Porter | |
| PRA | Prima | |
| PRD | Paulared | |
| PRI | Priscilla | |
| PRM | Priscilla Mutation | |
| PRS | Pristine | |
| PSP | Praire Spy | |
| QUI | Quinte | |
| RCD | Red chief Delicous | |
| RCO | Redcort | |
| RDE | Red Delicous | |
| REG | Regent Delicous | |
| RFR | Redfree | |
| RGA | Regel Gala | |
| RGS | Red Gravenstein | |
| RHA | Red Haralson | |
| RIG | Rhode Island Greening | |
| RMA | Redmax | |
| ROG | Royal Gala | |
| ROX | Roxbury Russet | |
| RRD | Red Ida Red | |
| RSP | Red Spy | |
| RST | Red Staymen | |
| RUJ | Ruby Jon | |
| RWE | Red Wealthy | |
| RYO | Red York | |
| SAN | Sansa | |
| SCO | Schweitzer Orange(Swiss Orange) | |
| SEN | Senshu | |
| SFA | State Fair | |
| SGD | Smoothie Golden Delicous | |
| SHA | Shamrock | |
| SHZ | Shizuka | |
| SMA | Summer mac | |
| SMC | Starkspur Macintosh | |
| SMH | Smokehouse | |
| SPA | Spartan | |
| SPI | Spigold | |
| SRA | Summer Rambo | |
| SRI | Sunrise | |
| SRO | Spuree Rome | |
| SRS | Sommerset Red Streak | |
| SSI | Sweet Sixteen | |
| STA | Staybrite | |
| STG | Starkspur Golden Delicous | |
| STR | Summer Treat | |
| SUN | Suncrisp | |
| SUR | Summer Red | |
| SWG | Swiss Gourmet(Arlet) | |
| TEM | Thorme Red Empire | |
| TLO | Tydemans late Orange | |
| TMB | Tremlats Bitter | |
| TRE | Tydemans Red | |
| TWI | Twurley Winesap | |
| TWO | Twenty Ounce | |
| UMC | UltraMac | |
| URJ | Ultra Red Jnonatha | |
| VBE | Vista Bella | |
| VIK | Viking | |
| WPR | Williams Pride | |
| WRI | Wolf River | |
| YAT | Yataka | |
| YNW | Yellow Newton | |
| YTR | Yellow transparent | |
| ZST | Zestar |