Jack Palance (1919–2006), American actor Jack Pardee (1936–2013), American National Football League player and head coach Jack Parsons (disambiguation), multiple people Jack Patera (1933–2018), American former football player and coach in the National Football League Jack Paterson (born 1974), Canadian director, devisor, dramaturg, translator, actor Jack Peart (1888–1948), English footballer Jack Pickersgill (1905–1997), Canadian civil servant and politician Jack M. Poorbaugh (1919–1987), American politician Jack Powell (disambiguation), multiple people Jack Joseph Puig, American music engineer and producer Jack Quaid (born 1992), American actor Jack Quinlan (1927–1965), American sportscaster Jack Quinn (disambiguation), multiple people Jack N. Rakove (born 1947), American historian, author, professor, and Pulitzer Prize winner Jack Ralite (1928–2017), French politician Jack Ramsay (1925–2014), American basketball coach Jack Reed (disambiguation), multiple people Jack Regan (disambiguation), multiple people Jack Rieley (1942–2015), American record producer Jack Riewoldt (born 1988), Australian rules footballer Jack River (born Holly Rankin, 1991), Australian singer-songwriter Jack Rosenthal (1931–2004), English playwright Jack Roush (born 1942), American founder, CEO, and co-owner of Roush Fenway Racing Jack Ruby (1911–1967), American nightclub operator who killed Lee Harvey Oswald Jack Russell (disambiguation), multiple people Jack Sack (1902–1980), American football player and coach Jack Saul, South African-Israeli tennis player Jack Sawyer (born 2002), American football player Jack Shepherd (disambiguation), multiple people Jack Sikma (born 1955), American National Basketball Association center Jack Snelling (born 1972), Australian politician Jack Sock (born 1992), American tennis player Jack Souther (1924–2014), American-Canadian geologist Jack Stauber (born 1996), American musician, YouTuber and animator Jack Steinberger (1921–2020), American physicist Jack Stoll (born 1998), American football player Jack Straw (born 1946), British politician Jack Suwinski (born 1998), American baseball player Jack Swagger (born 1982), American wrestler Jack Sweeney, American programmer and entrepreneur Jack Swift (born 1985), Australian paratriathlete Jack Tatum (1948–2010), American National Football League player Jack Taylor (basketball) (born 1990), American basketball player Jack Tighe (1913–2002), American Major League Baseball head coach Jack Titus (1908–1978), Australian rules football player Jack Tocho (born 1995), American football player Jack Trice (1902–1923), American football player Jack Troy (1928–1995), Australian rugby league footballer Jack Twyman (1934–2012), American basketball player and sports broadcaster Jack Ulrich (1890–1927), Canadian ice hockey player Jack Underman (1925–1969), American basketball player Jack Underwood (1894–1936), American football player Jack Unruh (1935–2016), American commercial illustrator Jack Unterweger (1950–1994), Austrian serial killer Jack Urban (1928–2006), former Major League Baseball pitcher Jack Vale (disambiguation), multiple people Jack Valenti (1921–2007), American political advisor and lobbyist,