| Derek Mitchell | Derek Mitchell (civil servant) | Derek Mitchell (cricketer) |
| Derek Mitchell (disambiguation) | Derek Mollison | Derek Mombourquette |
| Derek Monaghan | Derek Montgomery | Derek Mooney |
| Derek Moore | Derek Moore-Brabazon | Derek Moore-Brabazon, 2nd Baron Brabazon of Tara |
| Derek Moran | Derek Morgan | Derek Morgan (cricketer) |
| Derek Morgan (Criminal Minds character) | Derek Morgan (Criminal Minds) | Derek Morgan (disambiguation) |
| Derek Morgan (rugby union) | Derek Moritz | Derek Morris |
| Derek Morris (academic) | Derek Morris (disambiguation) | Derek Morris (hockey player) |
| Derek Morris (ice hockey) | Derek Morris (Neighbours) | Derek Moss |
| Derek Mount | Derek Mountfield | Derek Mountford |
| Derek Moye | Derek Muller | Derek Mulligan |
| Derek Mulvaney | Derek Murphy | Derek Murphy (blogger) |
| Derek Murphy (disambiguation) | Derek Murphy (musician) | Derek Murray |
| Derek Murray (Australian footballer) | Derek Murray (disambiguation) | Derek Murray (footballer born 1960) |
| Derek Murray (footballer) | Derek Murray (footballer, born 1960) | Derek Murray (Gaelic footballer) |
| Derek Murray (Scottish footballer) | Derek Murray (sports presenter) | Derek Murray (Sports Presenter) |
| Derek Murray Wyatt | Derek N. Twist | Derek Nally |
| Derek Nash | Derek Nash (disambiguation) | Derek Nash (musician) |
| Derek Nash (saxophonist) | Derek Nash (soccer) | Derek Nassari |
| Derek Nathanial Luke | Derek Nathaniel Bell | Derek Neate |
| Derek Needham | Derek Neikirk | Derek Neilson |
| Derek Nesbitt | Derek Newark | Derek Newton |
| Derek Nguyen | Derek Nicholls | Derek Nicholson |
| Derek Nikitas | Derek Nimmo | Derek Nippard |
| Derek Niven | Derek Nixon | Derek Nolan |
| Derek Noonan | Derek Norman Hole | Derek Norris |
| Derek O'Brien | Derek O'Brien (disambiguation) | Derek O'Brien (drummer) |
| Derek O'Brien (footballer born 1957) | Derek O'Brien (footballer born 1979) | Derek O'Brien (footballer) |
| Derek O'Brien (footballer, born 1957) | Derek O'Brien (footballer, born 1979) | Derek O'Brien (politician) |
| Derek O'brien (quizmaster) | Derek O'Brien (quizmaster) | Derek O'Connor |
| Derek O'Connor (disambiguation) | Derek O'Connor (footballer, born 1955) | Derek O'Connor (footballer, born 1978) |
| Derek O'Connor (journalist) | Derek O'Dell | Derek O'Farrell |
| Derek O'Farrell (Brookside) | Derek O'Farrell (rower) | Derek O'Reilly |
| Derek Oatway | Derek O’Brien | Derek Ogbeide |
| Derek Ogg | Derek Ogilvie | Derek Oldbury |
| Derek Oldham | Derek Oliver | Derek Oliver Gladwin, Baron Gladwin of Clee |
| Derek Orford | Derek Oulton | Derek Owen |
| Derek Owusu | Derek P. Scales | Derek Pace |
| Derek Page | Derek Page, Baron Whaddon | Derek Pagel |
| Derek Palmer | Derek Palmer (businessman) | Derek Palmer (disambiguation) |
| Derek Palmer (priest) | Derek Palmer Jr. | Derek Pang |
| Derek Panter | Derek Panza | Derek Paravicini |
| Derek Pardon | Derek Parfit | Derek Parfitt |
| Derek parfitt | Derek Parish | Derek Parker |
| Derek Parker (footballer) | Derek Parkin | Derek Parks |
| Derek Parlane | Derek Parra | Derek Partridge |
| Derek Pascoe | Derek Patmore | Derek Pattinson |
| Derek Paul Boyle | Derek Paul Jack Boyle | Derek Paxton |
| Derek Payne | Derek Pearcy | Derek Peardon |
| Derek Pearsall | Derek Pearson | Derek Pegues |
| Derek Pell | Derek Pellicci | Derek Peltier |
| Derek Pender | Derek Penman | Derek Penslar |
| Derek Pepperell | Derek Percival Scales | Derek Percy |
| Derek Perera | Derek Peterson | Derek Phillips |
| Derek Phillips (actor) | Derek Phillips (disambiguation) | Derek Phillips (footballer born 1975) |
| Derek Phillips (footballer, born 1975) | Derek Phillips (New Zealand footballer) | Derek Piggott |
| Derek Pike | Derek Piotr | Derek Pitman |
| Derek Plante | Derek Plumbly | Derek Plumstead |
| Derek Pollard | Derek Pomana | Derek Popovich |
| Derek Porter | Derek Porter (disambiguation) | Derek Porter (footballer) |
| Derek Possee | Derek Potteiger | Derek Poundstone |
| Derek Powers | Derek Powers / Blight | Derek Prag |
| Derek Pratt | Derek Prentice | Derek Pressnall |
| Derek Preston | Derek Price | Derek Price (American football) |
| Derek Price (disambiguation) | Derek Price (Fireman Sam) | Derek Price/Rod Webster Prize |
| Derek Prime | Derek Prince | Derek Prine |
| Derek Pringle | Derek Pritchard, Baron Pritchard | Derek Prout |
| Derek Pugh | Derek Pyke | Derek Quick |
| Derek Quigley | Derek Quinlan | Derek Quinn |
| Derek Quinnell | Derek R. Hill | Derek R. Molter |
| Derek R. Peterson | Derek Rackley | Derek Rae |
| Derek Raivio | Derek Ramsay | Derek Ramsey |
| Derek Randall | Derek Ratcliffe | Derek Rawcliff |
| Derek Rawcliffe | Derek Ray | Derek Raymond |
| Derek raymond | Derek Rayner | Derek Rayner, Baron Rayner |
| Derek Redmond | Derek Reese | Derek Reeves |
| Derek Reffell | Derek Reginald Bell | Derek Reginald Bell MBE |
| Derek Reid | Derek Reilly | Derek Reisfield |
| Derek reisfield | Derek Rencher | Derek Reston |
| Derek Reston (Arrowverse) | Derek Richardson | Derek Richardson (actor) |
| Derek Richardson (disambiguation) | Derek Richardson (footballer) | Derek Richter |
| Derek Rickard | Derek Riddell | Derek Ridgers |
| Derek Ridgewell | Derek Rieth | Derek Riggs |
| Derek Riley | Derek Ringer | Derek Riordan |
| Derek Rivers | Derek Robbins | Derek Robert Miller |
| Derek Roberts | Derek Robertson | Derek Robertson (American football) |
| Derek Robertson (artist) | Derek Robertson (Australian politician) | Derek Robertson (disambiguation) |
| Derek Robertson (footballer) | Derek Robertson (politician) | Derek Robin Diamond |
| Derek Robins | Derek Robinson | Derek Robinson ("Red Robbo") |
| Derek Robinson (disambiguation) | Derek Robinson (novelist) | Derek Robinson (physicist) |
| Derek Robinson (spokesman) | Derek Robinson (sport shooter) | Derek Robinson (trade unionist) |
| Derek Roche | Derek Roddy | Derek Rodier |
| Derek Roe | Derek Roff | Derek Roland Clark |
| Derek Roman | Derek Ronald Sherborn | Derek Rose |
| Derek Ross | Derek Round | Derek Rowan |
| Derek Rowen | Derek Roy | Derek Roy (comedian) |
| Derek Royle | Derek Rucker | Derek Ruell |
| Derek Russell | Derek Russell Davis | Derek Ryan |
| Derek Ryan (disambiguation) | Derek Ryan (ice hockey) | Derek Ryan (singer) |
| Derek Ryan (squash player) | Derek Ryan Smith | Derek Rydall |
