| ONESIE FOMIA | | 2019 | ALL AT ONCE | WAIMEA FOMIA | FARRINGTON | KWPN | |
| OPOQUE | | 2019 | ALL AT ONCE | ICE PRINCESS STH | DAVINO V.O.D. | KWPN | DWB, HANN, KWPN, OLDBG, WESTF |
| OTAZU | | 2019 | ALL AT ONCE | ATILINDA M | NEGRO | KWPN | |
| ONE MACOEMBA | O.K. MACOEMBA | 2019 | AREZZO VDL | K. MACOEMBA | F-ONE USA | KWPN | KWPN |
| ACDA V&V Z | | 2019 | ASCA Z | JELASCHA V&V | CLINTON | ZANG | |
| BOSTON VDL | ORIGAMI VDL | 2019 | BALTIC VDL | JEUNE DAME VDL | ZIROCCO BLUE VDL | KWPN | KWPN, ZANG |
| ON AND ON MB | | 2019 | BALTIC VDL | KOOSJE DE ROBLESSE | HARLEY VDL | KWPN | |
| OLIVIER | K OLIVIER, K-OLIVIER | 2019 | BLUE HORS KINGSTON | GATIKA | FLORENCIO I | KWPN | NRPS |
| OMEGA | | 2019 | BLUE HORS KINGSTON | EVITA | VIVALDI | KWPN | |
| O' CONNOR AF | O CONNOR AF, O'CONNOR AF, OCONNOR AF | 2019 | BLUE HORS KINGSTON | GINA | FLORENCIO I | KWPN | |
| OMARGO | | 2019 | CAMARGO 2 | LIMBO | LIMBUS | KWPN | |
| TOPAZE VD | | 2019 | CANTURANO I | ORFEE VDB | DIAMANT DE SEMILLY | BWP | |
| ORAL JDV | | 2019 | CAPE CORAL RBF Z | HANTATE | LAMM DE FETAN | KWPN | |
| OBELISK-H | OBELISK H | 2019 | CAPE CORAL RBF Z | ROLINA | CARETINO | KWPN | |
| OPUS ONE JDV | OSKA JDV | 2019 | CAPE CORAL RBF Z | KALINA JDV | CARDENTO | KWPN | KWPN |
| OVER THE TOP | | 2019 | CARAMBOLE | ITSY DITSY | DANTOS HBC | KWPN | |
| CARTIER VDL | THORAN A | 2019 | CARRERA VDL | GAMANKA-A | CORLAND | BWP | AES |
| C | | 2019 | CARRERA VDL | ATENDRI | CONTENDER | HOLST | |
| OFFSHORE VD WATERMOLEN | OFFSHORE VAN DE WATERMOLEN | 2019 | CASTLE CREEK | IDANA | CARAMBOLE | KWPN | |
| CHACCO’S TALENT Z | CHACCOS TALENT Z | 2019 | CHACCO-BLUE | ON VERRA VAN 'T MERELSNEST | KANNAN GFE | ZANG | |
| CYCLOON R&D Z | | 2019 | CHACOON BLUE | KEY STAR SIH | E STAR | ZANG | |
| COMFORT PP Z | | 2019 | CICERO Z VAN PAEMEL | FADERMIE PP | DIAMANT DE SEMILLY | ZANG | |
| OXFORD | | 2019 | CONTHARGOS | HONEY-PEARL | EMERALD VAN 'T RUYTERSHOF | KWPN | |
| ORLEANS VDL | COCORICO JT Z | 2019 | CONTHARGOS | HAPPY DAYS Z | HEARTBREAKER | ZANG | KWPN |
| OCALA Z.G. | OCALA ZG, CORVETTE Z.G Z, CORVETTE ZG Z | 2019 | CORNET OBOLENSKY | ELANOIR Z.G. | DIAMANT DE SEMILLY | ZANG | KWPN |
| OSLO | | 2019 | COTE DE ZELANDE DELTA MOSSEL Z | KELVIRA | CHAMAN | KWPN | KWPN |
| ON TIME B | | 2019 | DALLAS VDL | J-CHIWA R | INDOCTRO | KWPN | |
| D | | 2019 | DANTE'S JUNIOR | ELFENSONDE | SION | OLDBG | |
| OKLAHOMA | | 2019 | DEPARON | DALIVIA | SPIELBERG | KWPN | |
| ORLANDO | | 2019 | DEPARON | DAMARIS ZELMA | UPHILL | KWPN | |
| OFF WHITE | | 2019 | DI CANTERO VAN TER HULST Z | ZANORY T | PHIN PHIN | KWPN | |
| ETERNAL SUNSHINE PM | THE ETERNAL SUNSHINE PM | 2019 | EMERALD VAN 'T RUYTERSHOF | ITOUSCHE V/D VOSBERG | KASHMIR VAN SCHUTTERSHOF | BWP | NRPS, ZANG |
| JAYMERALD DU TRÈFLE | ONLY YOU DDH | 2019 | EMERALD VAN 'T RUYTERSHOF | GIRLY DU TREFLE | KANNAN GFE | SF | KWPN |
| OMAR SHARIF | | 2019 | ESCAMILLO | KHLOE PLATINUM | FERGUSON | KWPN | OLDBG |
| EXTREME U.S. | EXTREME US, EUROSTAR US, EL VIVO PS | 2019 | ESCAMILLO | VIVA CONTANA PS | VIVALDI | OLDBG | HANN, KWPN |
| OSAKA | | 2019 | ESCOLAR | CAPRI P | FLORENCIO I | KWPN | KWPN |
| OOSTERBUUR | | 2019 | ETOULON VDL | COLETTA | CORNADO I | WESTF | KWPN |
| FABRIZIO | F OTAZU PP, F-OTAZU PP | 2019 | FERDINAND | KHLOEVANCK PP | GOVERNOR | KWPN | NRPS |
| OSBORNE | F OSBORNE, F-OSBORNE | 2019 | FOR FERRERO | CORIEN | JOHNSON | KWPN | NRPS |
| OXBOW KENTON S | | 2019 | FOR FERRERO | AMADIN S | TRENTO B | KWPN | |
| FABIANO | | 2019 | FOR ROMANCE I | DIANE | DIAMOND HIT | WESTF | WESTF |
| ORLANDO Z | | 2019 | FOR ROMANCE I | ZARLUDINE | FERRO | KWPN | |
| ODYSSEUS P | | 2019 | FOUNDATION | BORENDY | PAINTED BLACK | KWPN | |
| BLUE HORS FREELANCE | | 2019 | FUERSTBISCHOF | STELLA | SAMBA HIT I | HANN | AES, HANN |
| DREAM UP | OKE HT | 2019 | GLOCK'S DREAM BOY | FIORETTA | UPHILL | KWPN | NRPS |
| OHJEE | | 2019 | GLOCK'S TOTO JR | CARORINKA WEERING | SORENTO | KWPN | |
| O'TOTO VAN DE WIMPHOF | OTOTO VAN DE WIMPHOF, O TOTO VAN DE WIMPHOF | 2019 | GLOCK'S TOTO JR | RASTEDE | RICCIONE | KWPN | HANN, KWPN |
| ONEDIN | | 2019 | GLOCK'S TOTO JR | IRESIA | METALL | KWPN | |
| ONASSIS TN | | 2019 | GRANDORADO TN N.O.P. | HELLA | QUASIMODO VAN DE MOLENDREEF | KWPN | KWPN |
| HASHTAG WHO ELSE Z | HASHTAG | 2019 | HEARTBEAT | KAMILLE | COMME IL FAUT | ZANG | |
| O'MACHO VDP | O MACHO VDP, OMACHO VDP | 2019 | HEARTBREAKER | CHARDONNAY VDP | QUIDAM DE REVEL | KWPN | NRPS |
| OPTIMIST ES | | 2019 | HERAKLES | CIAO BELLA Z | CARITANO Z | KWPN | KWPN |
| OLD SHATTERHAND TCS | | 2019 | HERAKLES | TENNESSE | VOLTAIRE | KWPN | |
| ORMANTICO | OUR PRINCE TR | 2019 | HERMANTICO | DARK PRINCESS | CHIN CHIN | KWPN | KWPN |
| ONE OF A KIND | | 2019 | IMPOSANTOS | KIM | FELLINI | KWPN | |
| ORINDUS W | | 2019 | IMPRESSIVE VDL | CARINDA | UKATO | KWPN | |
| OVINIO | OVIDIUS | 2019 | IPSTHAR | KOVINIA | VIGO D'ARSOUILLES | KWPN | KWPN |
| ONLY ONE JB | ONLY YOU JB | 2019 | IT'S OTTO | CHALLENGE JB | NASSAU | KWPN | KWPN |
| O'MALLEY | OMALLEY, O MALLEY | 2019 | JENSSEN VDL | KAMILLE | COMME IL FAUT | KWPN | |
| OUTSIDER DK | OSTER LINDET | 2019 | JUKEBOX | UMOSA | CAVALIER | KWPN | KWPN |
| OEREND HARD HBC | | 2019 | JUKEBOX | GENEVE | TOLAN R | KWPN | KWPN |
| OVEZANDE DE NORDIEK | | 2019 | JUST WIMPHOF | KWINTINA | VIVALDI | KWPN | |
| OLIVIER ASD | | 2019 | JUST WIMPHOF | GUCCI | APACHE | KWPN | |
| O'ÇHAMP M | OÇHAMP, O ÇHAMP, O'CHAMP | 2019 | JUST WIMPHOF | KUMATHIKA M | GALAXIE | KWPN | |
| OAKLEY K | | 2019 | JUST WIMPHOF | TARA | JAZZ | KWPN | |
| OZ | | 2019 | KAISER WELTINO | PENINNA | HOUSTON | KWPN | |
| OAKLEY | | 2019 | KREMLIN MD | GLITZY LADY | FÜRSTENBALL | KWPN | |
| LUIGI VD ZEIJERWEG SB | LUIGI VAN DE ZEIJERWEG Z, LUIGI VD ZEIJERWEG Z | 2019 | LUIGI D'ECLIPSE | KARIS VAN DE DISTELHOEVE | NABAB DE REVE | ZANG | AES, KWPN |
| OUTLAW | OLANO | 2019 | MANCHESTER VAN 'T PARADIJS | ZWINULANA | PHIN PHIN | KWPN | KWPN |
| OCTAVIUS ES | | 2019 | MATISSE DE MARIPOSA | ISOLDE ES | CUMANO | KWPN | |
| ONNASSIS HOKSHOEVE | ONASSIS HOKSHOEVE | 2019 | MORRICONE I | CUWENSIE | DONNERBALL | KWPN | |
| OBAMA ES | | 2019 | NIXON VAN 'T MEULENHOF | GRACIA ES | LAST MAN STANDING | KWPN | KWPN |
| OBERON ES | | 2019 | NIXON VAN 'T MEULENHOF | LOLITA ES | MOSITO VAN HET HELLEHOF | KWPN | |
| OUTSIDER H.J. Z | OUTSIDER HJ Z | 2019 | OKLAHOMA VAN DE ZELM | VAANTJE R | INDORADO | ZANG | |
| ODYSSEUS OF INVICTUS | | 2019 | QUABRI DE L'ISLE | BLESSINGS FROM SECOND LIFE Z | BALOU DU ROUET | KWPN | KWPN |
| OLYMPUS VDT | | 2019 | ROMANOV | VELVET V.D.T. | FERRO | KWPN | |
| S | | 2019 | SCHWARZGOLD | ELVIRA IV | PARTOUT | TRAK | |
| HILLS BOROUGH R.A. Z | HILLSBOROUGH R.A. Z, HILLS BOROUGH RA Z | 2019 | SCUDERIA 1918 HALIFAX VAN HET KLUIZEBOS | CARMENSINA VDM | CORLAND | ZANG | |
| SECRET LOVER | | 2019 | SECRET | OH LA LA | FÜRSTENBALL | OLDBG | KWPN, OLDBG |
| ONE TO REMEMBER | | 2019 | SECRET | GRACIA HEROIQUE | VIVALDI | KWPN | |
| MSJ SPRINGBREAK | | 2019 | SPRINGBANK II VH | MSJ A LA FREESTYLE | AMPERE | OLDBG | |
| ON MY MIND | | 2019 | STERREHOF'S CAYETANO Z | DOLORES MB | THUNDER VAN DE ZUUTHOEVE | KWPN | |
| OUR TOTILAS M | | 2019 | TOTILAS | UMATHIKA M | SANDRO HIT | KWPN | |
| OREO | | 2019 | TOTILAS | IMANI - B | FLORENCIO I | KWPN | |
| OVAL OFFICE | | 2019 | UNITED TOUCH S | SURPRISE DELTA MOSSEL Z | SPARTACUS TN | KWPN | KWPN |
| U2 SR | OAKLAND KEY SR | 2019 | UNITED TOUCH S | GUIDAN | QUIDAM DE REVEL | AES | |
| OXFORD VDL | ONANE VDL | 2019 | UNTOUCHED | BE HELENA VDL | CHIN CHIN | KWPN | KWPN, SWB |
| OBSESSION TAONGA | OBSESSION | 2019 | VITALIS | JATILINDA | ALL AT ONCE | KWPN | KWPN |
| ONE TWO THREE | | 2019 | VIVALDI | TOLIVIA | D-DAY | KWPN | HANN, KWPN, OLDBG |
| OREO VDL | | 2019 | ZIROCCO BLUE VDL | ZOKLAHOMA VDL | EMILION | KWPN | |
