Jack Nicklaus 💼 Golfer, golf course designer Jack Nitzsche 💼 Composer, pianist, jazz musician, saxophonist, record producer, film score composer, music arranger, songwriter Jack Northrop 💼 Military flight engineer, engineer Jack Noseworthy 💼 Television actor, film actor, stage actor Jack O'Halloran 💼 Actor, television actor, boxer Jack Oakie 💼 Comedian, film actor, television actor, actor Jack Osbourne 💼 Actor, film actor, television presenter, television actor Jack Owen 💼 Guitarist, musician Jack Paar 💼 Television presenter, journalist, game show host, actor, military officer, comedian, radio personality, film actor, writer, military personnel Jack Palance 💼 Film actor, stage actor, television actor, boxer, model, actor, assistant director, military officer, military personnel Jack Parsons 💼 Chemist, military flight engineer, poet, fencer, inventor, businessperson, socialite Jack Pickersgill 💼 Politician, writer, businessperson, lecturer, high civil servant, ship-owner Jack Pickford 💼 Actor, stage actor, film director, film producer Jack Portland 💼 Ice hockey player, athletics competitor Jack Purcell 💼 Stockbroker, badminton player Jack Quaid 💼 Actor, film actor, voice actor, television actor Jack R. Lousma 💼 Military officer, astronaut, aircraft pilot, military flight engineer Jack Ragland 💼 Basketball player Jack Ramsay 💼 Television presenter, basketball coach, basketball player, non-fiction writer, sports commentator, coach Jack Reynor 💼 Actor, film actor Jack Rodewald 💼 Ice hockey player Jack Rodwell 💼 Association football player Jack Ruby 💼 Businessperson, nightclub owner Jack Scalia 💼 Television actor, film actor, model, film producer Jack Schlossberg 💼 Writer Jack Sharkey 💼 Boxer Jack Sherman 💼 Guitarist Jack Sholder 💼 Film director, screenwriter, film editor Jack Sikma 💼 Basketball player, basketball coach Jack Smight 💼 Theatrical director, film director, film producer Jack Sock 💼 Tennis player Jack Sonni 💼 Guitarist Jack Steinberger 💼 Physicist, university teacher Jack Straw 💼 Politician, barrister, judge Jack Studnicka 💼 Ice hockey player Jack Swigert 💼 Politician, military officer, astronaut, aircraft pilot, military flight engineer Jack Teagarden 💼 Singer, jazz musician, bandleader, composer Jack Thayer 💼 Vice president, writer Jack Tramiel 💼 Entrepreneur, businessperson Jack Trout 💼 Entrepreneur, economist Jack Tunney 💼 Entrepreneur, promoter, businessperson Jack Twyman 💼 Basketball player Jack Ulrich 💼 Ice hockey player Jack Valenti 💼 Civil servant, actor, businessperson, politician, aircraft pilot Jack Vance 💼 Writer, novelist, science fiction writer, sailor, electrician Jack W. Szostak 💼 Biologist, molecular biologist, geneticist, professor, biochemist Jack Walker 💼 Businessperson, business magnate, aircraft pilot Jack Walter 💼 Athletics competitor Jack Warden 💼 Television actor, film actor, character actor, stage actor, boxer, actor Jack Webb 💼 Film director, screenwriter, film actor, television actor, film producer, television producer Jack Welch 💼 Businessperson, writer, engineer, journalist, manager, entrepreneur Jack Weston 💼 Television actor, film actor, stage actor Jack Wetherall 💼 Stage actor, film actor, television actor Jack White 💼 Guitarist, singer, actor, composer, mandolinist, drummer, pianist, singer-songwriter, record producer, recording artist, voice actor, television actor, film actor Jack Whitehall 💼 Comedian, television presenter, actor, screenwriter, stand-up comedian, television actor Jack Whyte 💼 Writer, novelist, actor, musician Jack Wiebe 💼 Politician, farmer Jack Wild 💼 Television actor, film actor, singer, actor Jack Williamson 💼 Writer, novelist, science fiction writer Jack Wilshere 💼 Association football player, association football coach