| 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 | Derek Ryder | Derek S. Green |
| Derek S. Pugh | Derek Sage | Derek Salman Pugh |
| Derek Samagalski | Derek Sampson | Derek sanders |
| Derek Sanders | Derek Sanderson | Derek Sanderson (soccer) |
| Derek Sanderson Jeter | Derek Sankey | Derek Santos Olson |
| Derek Sarno | Derek Saunders | Derek Savage |
| Derek Savage (disambiguation) | Derek Savage (filmmaker) | Derek Savage (Gaelic footballer) |
| Derek Savage (poet) | Derek Saward | Derek Scales |
| Derek Schiavone | Derek Schiller | Derek Schmidt |
| Derek schmidt | Derek Schofield | Derek Schooley |
| Derek Schouman | Derek Schroder | Derek Schroeder |
| Derek Scott | Derek Scott (athlete) | Derek Scott (cricketer) |
| Derek Scott (curler) | Derek Scott (disambiguation) | Derek Scott (footballer) |
| Derek Scott (music director) | Derek Scott Jr. | Derek Scott, Jr. |
| Derek Scrimgour | Derek Seagrim | Derek Sealy |
| Derek Sebastian Burch IV | Derek See | Derek Segal |
| Derek Seguin | Derek Semmence | Derek Senior |
| Derek Seth-Smith | Derek Shackleton | Derek Sharp |
| Derek Shaw | Derek Shaw (businessman) | Derek Shaw (footballer) |
| Derek Shearer | Derek Sheen | Derek Shelton |
| Derek Shepherd | Derek Sherborn | Derek Sherinian |
| Derek Sherrod | Derek Shiel | Derek Showers |
| Derek Shulman | Derek Shybunka | Derek Sikua |
