- Oct 2 Éder Jofre, Brazilian boxer (WBA, WBC & The Ring Bantamweight, WBC Featherweight titles; International Boxing HOF), dies from chronic traumatic encephalopathy at 86
- Oct 2 Shirley Englehorn, American golfer (Women's PGA C'ship 1970), dies at 81
- Oct 3 Per Bredesen, Norwegian soccer forward (18 caps; Ørn Horten FK, Lazio, Udinese, AC Milan, Bari, Messina), dies at 91
- Oct 4 Dave Dryden, Canadian ice hockey goaltender (designer first mask-cage combination goalie mask; Chicago Black Hawks, Buffalo Sabres, Edmonton Oilers), dies at 81
- Oct 4 Jesús del Muro, Mexican soccer defender (40 caps; Atlas FC, CF Cruz Azul) and manager (Toluca FC, CF Pachuca, Jalisco AC), dies at 84
- Oct 4 Jürgen Sundermann, German soccer manager (Servette, VfB Stuttgart, Schalke 04, Strasbourg, Hertha BSC) and midfielder (1 cap West Germany; FC Basel, Servette), dies at 82
- Oct 6 Gian Piero Ventrone, Italian athletic trainer (Juventus FC, Italy 2004-06, SSC Bari, Atalanta BC, Tottenham Hotspur FC), dies from a brain haemorrhage at 62
- Oct 6 Phil Read, English motorcycle racer (World C'ship 125cc 1968, 250cc 1964-65, 68, 71 & 500 cc 1973-74; Formula TT 1977), dies at 83
- Oct 7 Bill Nieder, American athlete (Olympic gold shot put 1960, silver 1956), dies at 89
- Oct 8 Gerben Karstens, Dutch road cyclist (Olympic gold 100km team trial 1964; 6 x stages Tour de France, 14 x stages Vuelta a España, 1 x stage Giro d'Italia), dies of stroke complications at 80
- Oct 9 Bruce Pairaudeau, West Indian cricketer (WI opening bat in 13 Tests, 115 on debut), dies at 91
- Oct 9 Margie Masters, Australian golfer (Western Open runner-up 1966), dies at 87
- Oct 9 Yuriy Dehteryov, Ukrainian soccer goalkeeper (17 caps USSR; Shakhtar Donetsk 321 games), dies at 74
- Oct 10 Sergio Brighenti, Italian soccer forward (9 caps; Modena, Internazionale, Triestina, Padova, Sampdoria), dies at 90
- Oct 11 Joe Crozier, Canadian ice hockey head coach (Buffalo Sabres 1971-74, Toronto Maple Leafs 1980-81), dies at 93
- Oct 12 Luke Jackson, American basketball center/forward (Olympic gold 1964; NBA C'ship 1967 Philadelphia 76ers; NBA All-Star 1965), dies from heart failure at 80
- Oct 13 Bruce Sutter, American Baseball HOF relief pitcher (NL Cy Young Award 1979; 6 x MLB All-Star; 5 x NL saves leader; Chicago Cubs, St. Louis Cardinals; Atlanta Braves), dies of cancer at 69
- Oct 13 Lennart Söderberg, Swedish soccer manager (Gefle IF, Västerås SK, IFK Eskilstuna) and defender (2 caps; AIK), dies at 81
- Oct 13 Pim van de Meent, Dutch soccer manager (PEC Zwolle, NEC, VBV De Graafschap, FC Den Haag), dies at 84
- Oct 13 Stavros Sarafis, Greek soccer attacking midfielder (32 caps; PAOK 358 games, 136 goals), dies at 72
- Oct 16 Dagmar Rom, Austrian alpine ski racer (World C'ship gold slalom & giant slalom 1950; Olympic silver giant slalom 1952), dies at 94
- Oct 18 Ole Ellefsæter, Norwegian cross-country skier (Olympic gold 50km & 4×10km relay 1968; World C'ship gold 4×10km relay 1966), dies from cardiac arrest at 83
- Oct 19 Charley Trippi, American College-Pro Football HOF halfback (Uni of Georgia; NFL C'ship 1947; First-team All-Pro 1948; Pro Bowl 1952, 53; Chicago Cardinals), dies at 100
- Oct 19 Dave Herman, American football offensive guard (Super Bowl 1969; AFL All-Star 1968, 69; All-AFL 1967, 68, 69; New York Jets), dies of chronic traumatic encephalopathy at 81
- Oct 19 Omar Borrás, Uruguayan soccer manager (Uruguay 1977, 82-87; Saudi Arabia), dies from kidney problems at 93
- Oct 20 Jimmy Millar, Scottish soccer centre forward (2 caps; Rangers 197 games) and manager (Raith Rovers), dies from dementia at 87
- Oct 21 Harry White, Australian jockey (Melbourne Cup: Think Big 1974, 75; Arwon 1978; Hyperno 1979; Australian Racing HOF), dies from multiple sclerosis at 78
- Oct 21 Jim Bolla Jr., American college basketball coach (UNLV Women 1982-96; Uni of Hawaii 2004-09), dies of cancer at 70
- Oct 23 Walt Corey, American football linebacker (AFL C'ship 1962, 66; AFL All-Star 1963; Dallas Texans/KC Chiefs) and coach (KC Chiefs, Buffalo Bills), dies at 84
- Oct 24 Tomasz Wójtowicz, Polish volleyball player (Olympic gold 1976; World C'ship gold 1974; Legia Warsaw, Santal Parma) and broadcaster, dies at 69
- Oct 28 Vince Dooley, American College Football HOF coach (NCAA C'ship, AFCA Coach of the Year, Eddie Robinson COY; AD University of Georgia 1979-2004), dies at 90
- Oct 31 Alan "Froggy" Thomson, Australian cricket fast bowler (4 Tests, 12 wickets; Victoria CA), dies at 76
- Oct 31 John McVay, American football coach (NY Giants 1976-78) and executive (AD Uni of Dayton 1972, 73; GM SF 49ers 1998-99), dies at 91
Baseball Players
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Boxers
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Tennis Champions