| O'Boyle | Bridlington Cemetery, |
| O'Brien | Anlaby Cemetery, Bridlington Cemetery, Hemingbrough, Laxton, Paull, Sewerby, |
| O'Byrne | North Ferriby, |
| O'Connell | Bridlington Cemetery, Hemingbrough, Howden Cemetery, |
| O'Connor | Anlaby Cemetery, Brandesburton, Bridlington Cemetery, Escrick, Everingham RC, Hedon Cemetery, Hollym, Holme On Spalding Moor, Withernsea Cemetery, |
| O'Doherty | Norton Cemetery, |
| O'Donald | Great Driffield Cemetery, |
| O'Donnell | Anlaby Cemetery, Nafferton, |
| O'Donoghue | Roos, |
| O'Donovan | Anlaby Cemetery, |
| O'Driscoll | North Newbald Cemetery, |
| O'Dwyer | Anlaby Cemetery, |
| O'Gorman | Stamford Bridge, |
| O'Grady | Bridlington Cemetery, Elloughton, |
| O'Gram | Allerthorpe, Holme On Spalding Moor, Yapham, |
| O'Halloran | Holme On Spalding Moor, |
| O'Hanlon | Bridlington Cemetery, |
| O'Hara | Bridlington Cemetery, Riccall, |
| O'Hare | Howden Cemetery, |
| O'Kane | Norton Cemetery, |
| O'Keefe | Hedon Cemetery, North Cliffe, |
| O'Keeffe | Bridlington Cemetery, |
| O'Kelly | Pocklington Cemetery, |
| O'Mahony | Bridlington Cemetery, |
| O'Malley | Hedon Cemetery, Market Weighton Cemetery, Molescroft Cemetery, Patrington Cemetery, |
| O'Meara | Anlaby Cemetery, |
| O'Neill | Bridlington Cemetery, Withernsea Cemetery, |
| O'Pray | Anlaby Cemetery, North Ferriby, |
| O'Regan | Great Driffield Cemetery, |
| O'Reilly | Market Weighton Cemetery, Pocklington Cemetery, |
| O'Rourke | Bridlington Cemetery, Flamborough, Great Driffield Cemetery, |
| O'Ryan | Norton Cemetery, |
| O'Shaughnessy | Anlaby Cemetery, |
| O'Shea | Bridlington Cemetery, Hornsea Cemetery2, Thorpe Bassett, |
| O'Sullivan | Bilton Cemetery, Howden Cemetery, Sproatley Cemetery, |
| O'Toole | Filey, Flamborough, |
| Oak | Bridlington Cemetery, |
| Oakden | Filey, |
| Oakes | Anlaby Cemetery, Bridlington Cemetery, Great Driffield Cemetery, Howden Cemetery, North Cave Extension, North Ferriby, Norton Cemetery, |
| Oakley | Anlaby Cemetery, Bridlington Cemetery, Elloughton, Howden Cemetery, Laxton, Nafferton, North Ferriby, Norton Cemetery, |
| Oakton | Skipsea Cemetery, |
| Oaten | Paull, |
| Oates | Bridlington Cemetery, Filey Cemetery, Goodmanham, Sherburn, Stamford Bridge, |
| Obridge | Anlaby Cemetery, |
| Ockleton | Keyingham Cemetery, |
| Ockley | Birdsall, |
| Ockwell | Bridlington Cemetery, |
| Oddemont | Bridlington Cemetery, |
| Oddy | Seaton Ross, Sewerby, |
| Odey | Hotham, Welton, |
| Odlin | Aldbrough, Little Driffield, |
| Odone | Beswick, |
| Officer | Bridlington Cemetery, |
| Offley | Winestead, |
| Offord | Great Driffield Cemetery, |
| Og | South Cave, |
| Ogden | Bridlington Cemetery, Hornsea Cemetery, Howden Cemetery, Kexby, Langtoft, Molescroft Cemetery, Pocklington Cemetery, Withernsea Cemetery, |
| Ogilvie | Thorngumbald Cemetery, |
| Ogle | Atwick, Aughton, Flamborough, Londesborough, Pocklington Cemetery, Sherburn, |
| Oglesby | Hedon Cemetery, Holmpton, Leconfield, Roos, Skeffling, South Cave Cemetery, Thornton, |
| Ogley | Hemingbrough, |
| Ogram | Barmby Moor, Bugthorpe, Humbleton, Lund, North Dalton, Patrington, Patrington Cemetery, Pocklington Cemetery, Roos, Sproatley Cemetery, Yapham, |
| Ogram-Cross | Elloughton, |
| Ogston | Hedon Cemetery, |
| Ohlson | Burstwick, North Ferriby, |
| Oke | Anlaby Cemetery, Bridlington Cemetery, |
| Okey | Anlaby Cemetery, Preston Cemetery, |
| Olbison | Flamborough, |
| Old | Elloughton, |
| Oldfield | Elloughton, Flamborough, Great Driffield Cemetery, Keyingham, North Ferriby, Norton Cemetery, Patrington Cemetery, |
| Oldman | Howden Cemetery, |
| Oldridge | Elloughton, Hedon Cemetery, Hemingbrough, Hutton Cranswick, Withernsea Cemetery, |
| Oldroyd | Brantingham, Bridlington Cemetery, Hornsea Cemetery2, Langtoft, North Ferriby, Norton Cemetery, Pocklington Cemetery, Thorpe Bassett, |
| Oliphant | Burstwick, |
| Oliver | Anlaby Cemetery, Bempton, Blacktoft, Brantingham, Bridlington Cemetery, Bubwith, Burstwick, Burton Pidsea, Carnaby, Dunnington, Eastrington Cemetery, Fangfoss, Filey, Filey Cemetery, Great Driffield Cemetery, Hedon Cemetery, Heslington, Holme On Spalding Moor, Hornsea Cemetery2, Howden Cemetery, Keyingham Cemetery, Londesborough, Newport, North Cave, North Cave Extension, North Ferriby, North Newbald Cemetery, Norton Cemetery, Pocklington Cemetery, Preston Cemetery, Riccall, Rowley, Ruston Parva, Scrayingham, Sigglesthorne, Skipwith, South Cave Cemetery, Stamford Bridge, Swine, Walkington, Weaverthorpe, Withernsea Cemetery, Yapham, |
| Ollard | Bainton, |
| Ollerearnshaw | Anlaby Cemetery, |
| Ollerenshaw | Pocklington Cemetery, |
| Ollett | Anlaby Cemetery, |
| Olley | Anlaby Cemetery, Hedon Cemetery, North Dalton Cemetery, Patrington Cemetery, |
| Ollivant | Aldbrough, |
| Ollivier | Bridlington Cemetery, |
| Olsen | Aldbrough Cemetery, Withernsea Cemetery, |
| Olson | Aldbrough Cemetery, Elloughton, |
| Olssen | Newport, |
| Olsson | Blacktoft, |
| Olszewski | Anlaby Cemetery, |
| Oman | Bridlington Cemetery, Reighton, Withernwick, |
| Omand | Elloughton, |
| Ombler | Anlaby Cemetery, Brandesburton, Bridlington Cemetery, Catwick, Folkton, Hedon Cemetery, Keyingham, Kilnsea, Market Weighton, Paull, South Cave Cemetery, Weaverthorpe, Welwick, Withernsea Cemetery, |
| Omer | North Cave, |
| Omond | Anlaby Cemetery, |
| Ong | Bridlington Cemetery, |
| Ongley | Nafferton, |
| Onions | Filey, Sigglesthorne, |
| Onley-Wilde | Anlaby Cemetery, |
| Opie | Etton, Hedon Cemetery, |
| Oram | Rise, Sewerby, |
| Orchard | Bridlington Cemetery, Filey Cemetery, |
| Ord | Bridlington Cemetery, Sherburn, |
| Orene | Tickton, |
| Organ | Bridlington Cemetery, Withernsea Cemetery, |
| Orman | Great Driffield Cemetery, |
| Ormanroyd | Barmston, |
| Orme | Bridlington Cemetery, |
| Ormerod | Bridlington Cemetery, |
| Ormesher | Wilberfoss, |
| Ormston | Anlaby Cemetery, |
| Orr | Bridlington Cemetery, Filey, Filey Cemetery, Hedon Cemetery, Norton Cemetery, |
| Orrah | Bridlington Cemetery, |
| Orry | Hornsea Cemetery2, |
| Orsborn | Bridlington Cemetery, |
| Orton | Catwick, |
| Orvis | Birdsall, Etton, |
| Orwin | Anlaby Cemetery, |
| Orzechowski | Bridlington Cemetery, Great Driffield Cemetery, |
| Osbaldeston | Hunmanby, |
| Osborne | Anlaby Cemetery, Bridlington Cemetery, Elloughton, Filey Cemetery, Flamborough, Hedon Cemetery, Hemingbrough, Hornsea, Hornsea Cemetery2, Kilnwick On The Wolds, Laxton, Molescroft Cemetery, North Ferriby, North Newbald Cemetery, Pocklington Cemetery, Skidby Cem2, Wressle, |
| Osbourne | Bilton Cemetery, Paull Cemetery, |
| Oscar | Hornsea Cemetery, |
| Oscroft | Bilton Cemetery, Burton Fleming, |
| Osgerby | Bridlington, Extraparochial, Hedon Cemetery, Hornsea Cemetery, Thorngumbald Cemetery, Withernsea Cemetery, |
| Osler | Cottingham Cemetery, Paull, Pocklington Cemetery, Thorngumbald Cemetery, |
| Osmond | Hollym, |
| Ossiach | Hornsea Cemetery2, |
| Oste | Welton, |
| Ostick | Bridlington Cemetery, Heslington, |
| Ostick-King | Settrington Cemetery, |
| Ostler | Anlaby Cemetery, Bilton Cemetery, Elloughton, |
| Oswald | Sproatley Cemetery, |
| Oswin | Bilton Cemetery, Flamborough, |
| Othick | Bridlington Cemetery, Filey, |
| Otley | Filey, Leavening, Millington, Rillington Cemetery, |
| Ott | Withernwick, |
| Ottaway | Burstwick, |
| Otter | Bridlington Cemetery, Hornsea Cemetery, |
| Otterburn | Bubwith, Ganton, |
| Ottewell | Bridlington Cemetery, |
| Ottley | Warter, |
| Otway | Westow, |
| Oubridge | Nafferton, |
| Oudijk | Wawne, |
| Ougden | Nafferton, |
| Ougham | Flamborough, |
| Oughtred | Brantingham, Walkington, |
| Oulton | Hedon Cemetery, Sherburn, |
| Ounsley | Howden Cemetery, |
| Ounsworth | Anlaby Cemetery, Hornsea Cemetery2, |
| Ouston | Bishop Burton, Bridlington Cemetery, |
| Outhart | Langtoft, |
| Outhert | Filey, |
| Outhet | East Heslerton, Rillington, Weaverthorpe, |
| Outhwaite | Barlby, Escrick, Long Riston, Riccall, South Cave Cemetery, Stillingfleet, |
| Outon | Bridlington Cemetery, |
| Outram | Elloughton, Filey, Kilham, |
| Ovenden | Holme On Spalding Moor, Hunmanby Cemetery, |
| Ovens | Hornsea Cemetery2, |
| Overall | Heslington, |
| Overend | Bridlington Cemetery, Eastrington, Eastrington Cemetery, Filey, Hayton, Nunburnholme, Pocklington, Sigglesthorne, Skidby Cem1, Wheldrake, Withernsea Cemetery, |
| Overfield | Bishop Burton, Burton Fleming Cemetery, Filey, Filey Cemetery, Great Driffield Cemetery, Hunmanby Cemetery, Muston, Pocklington Cemetery, Rudston, Tickton, |
| Overington | Allerthorpe, |
| Overment | Bridlington Cemetery, Tickton, |
| Overton | Cherry Burton, Easington, Hornsea Cemetery2, North Ferriby, |
| Overvoorde | Keyingham Cemetery, |
| Overy | Filey, Flamborough, |
| Owbridge | Nafferton, Skirlaugh, Sledmere, |
| Owen | Anlaby Cemetery, Barlby, Birdsall, Bridlington, Bridlington Cemetery, Escrick, Garton On The Wolds, Great Driffield Cemetery, Helperthorpe, Hunmanby Cemetery, North Ferriby, Pocklington Cemetery, Skidby Cem2, Sledmere, Watton, West Lutton, |
| Owens | Aldbrough Cemetery, Barmby Moor, Paull, Withernsea Cemetery, |
| Owers | Dunnington, Ottringham, |
| Owst | Anlaby Cemetery, Barmby Moor, North Ferriby, Ottringham, Patrington, Rowley, Withernsea Cemetery, |
| Owston | Bainton, Bridlington, Bridlington Cemetery, Burton Agnes, Harpham, Huggate, Hunmanby Cemetery, Rillington, Rillington Cemetery, Roos, Sherburn, Skirlaugh, Stillingfleet, Thixendale, Thorpe Bassett, West Heslerton, |
| Oxberry | Bridlington Cemetery, |
| Oxendale | Anlaby Cemetery, Burton Fleming, Hornsea Cemetery2, Kirby Grindalythe, Newport, Rillington Cemetery, Sherburn, |
| Oxer | Bridlington, |
| Oxlade | Hutton Cranswick, |
| Oxley | Bridlington, Bridlington Cemetery, Filey, Filey Cemetery, Great Driffield Cemetery, Kilham Cemetery, North Cave, Norton Cemetery, |
| Oxtoby | Acklam, Bishop Burton, Bishop Wilton, Bridlington Cemetery, Burnby, Cherry Burton, Dunnington, Filey, Garton On The Wolds, Goodmanham, Great Driffield Cemetery, Holme On Spalding Moor, Humbleton, Hutton Cranswick, Kirkburn, Lowthorpe, Market Weighton, Market Weighton Cemetery, Middleton On The Wolds Cemetery, Millington, Molescroft Cemetery, Nafferton, Newport, North Cave Extension, North Cliffe, North Dalton Cemetery, North Newbald, North Newbald Cemetery, Norton Cemetery, Pocklington Cemetery, Rillington Cemetery, Sancton, Sherburn, Skirlaugh, Skirpenbeck, Stamford Bridge, Warter, Wetwang, Wharram Le Street, Wheldrake, |
| Oyston | Anlaby Cemetery, Bridlington Cemetery, |
| Ozsanlav | South Cave Cemetery, |
