- Oct 2 Neville Marriner, English conductor and violinist (Academy of St Martin in the Fields), dies at 92
- Oct 2 Thomas Round, British tenor (Gilbert and Sullivan For All), dies at 100
- Oct 4 Hso Khan Pha, 1st President of the democratic and newly independent Union of Burma from 1948-52, dies at 78
- Oct 4 Donald H. White, American composer (Lyric Suite for Euphonium and Winds; Tuba Sonata) and educator, dies at 95
- Oct 5 Michal Kováč, ist President of Slovakia (1993-98), dies at 86
- Oct 9 Aaron Pryor, American welterweight boxing champion, dies of heart disease at 60
- Oct 9 Andrzej Wajda, Polish film director (Ashes & Diamonds, Man of Iron), dies at 90
- Oct 13 Gerhard Wimberger, Austria composer (Glove), dies at 93
Bhumibol Adulyadej
Oct 13 Bhumibol Adulyadej [Rama IX], King of Thailand (1946-2016), was world's longest reigning monarch, dies at 88
Bhumibol Adulyadej
- Oct 13 Dario Fo, Italian playwright and performer (Nobel Prize Literature 1997), dies at 90
- Oct 13 John Gilmore, American true crime author (Severed: The True Story of the Black Dahlia Murder), dies at 81
- Oct 13 Jim Prentice, Canadian politician, Premier of Alberta (2014-15), dies in a plane crash at 60
- Oct 14 Jean Alexander, English actress (Hilda Ogden on Coronation Street), dies at 90
- Oct 15 Barbara Romack, American golfer (US Curtis Cup team 1954, 56, 58), dies at 83
- Oct 16 Kigeli V, last King of Rwanda (1959-61), dies at 80
- Oct 17 Eddie Applegate, American actor (Patty Duke Show), dies at 81
- Oct 18 Anthony Addabbo, American actor (Jason-Generations), dies at 56
- Oct 19 Yvette Chauviré, French ballerina, dies at 99
- Oct 20 Junko Tabei, Japanese mountain-climber, 1st woman to climb Mount Everest, dies at 77
- Oct 21 Manfred Krug, German actor (Boxer), dies at 79
- Oct 22 Steve Dillon, English comic book artist (Preacher), dies at 54
- Oct 23 Jack Chick, American religious cartoonist (Chick tracts), dies at 92
- Oct 23 Tom Hayden, American civil rights and antiwar activist and politician (Rep-D-Ca), dies at 76
- Oct 23 Khalifa bin Hamad Al Thani, Emir of Qatar (1972-95), dies at 84
- Oct 24 Pete Burns, English singer (Dead or Alive, "Spin Me Round"), dies of a cardiac arrest at 57
- Oct 24 Bobby Vee, American pop singer (Night has a Thousand Eyes), dies at 73
- Oct 24 Jorge Batlle Ibáñez, Uruguayan politician, President of Uruguay (2000-2005), dies at 88
- Oct 25 Carlos Alberto Torres, Brazilian footballer, Captain of winning World Cup team (1970), dies at 72
- Oct 27 Pentti Siimes, Finnish actor (Miriam), dies at 87
- Oct 29 Pen Sovann, 1st post-Khmer Rouge Cambodian Prime Minister (1981), dies at 80
- Oct 29 John D. Roberts, American chemist, received American Institute of Chemists Gold Medal (2013), dies at 98
- Oct 29 Roland Dyens, French classical guitarist, composer, and arranger (Libra Sonatine), dies at 61
- Oct 31 Tammy Grimes, American stage actress (Unsinkable Molly Brown), dies at 82
- Oct 31 James Galanos, American fashion designer (Coty Hall of Fame 1959), dies at 92
- Oct 31 Natalie Babbitt, American children's writer (Tuck Everlasting), dies of lung cancer at 84