Players wearing uniform number 40:
MLB
Boston Red Sox
- Bill McKechnie (1952-53) (Coach)
- Buster Mills (1954) (Coach)
- Russ Kemmerer (1955)
- Frank Baumann (1955-56)
- Bob Chakales (1957)
- Mike Ryan (1964-65)
- Rollie Sheldon (1966)
- Galen Cisco (1967)
- Ken Harrelson (1967-69)
- Carlton Fisk (1969)
- Billy Conigliaro (1970-71)
- Dwight Evans (1972-73)
- Rick Wise (1974-77)
- Frank Tanana (1981)
- Calvin Schiraldi (1986)
- Dave Henderson (1986)
- John Dopson (1989-93)
- Sergio Valdez (1994)
- Erik Hanson (1995)
- Herm Starrette (1996) (Coach)
- Robinson Checo (1997-98)
- Mark Guthrie (1999)
- Michael Coleman (1999)
- Sang Hoon Lee (2000)
- Tony Cloninger (2002-03) (Coach)
- Cla Meredith (2005)
- Alejandro Machado (2005)
- Ken Huckaby (2006)
Chicago Cubs
- Tot Pressnell (1941-42)
- Jimmy Wilson (Manager) (1943-44)
- Charlie Grimm (Manager) (1944-49)
- Chuck Conners (1951)
- Dee Fondy (1951-57)
- Ed Mayer (1957)
- Glen Hobbie (1959-64)
- Jack Warner (1964-65)
- Bill Hoeft (1965-66)
- Don Larsen (1967)
- Pete Mikkelsen (1967-68)
- Jack Lamabe (1968)
- Larry Gura (1970-73)
- Herb Hutson (1974)
- Eddie Solomon (1975)
- Mike Krukow (1976)
- Pete Broberg (1977)
- Lynn McGlothen (1978-81)
- Dave Geisel (1981)
- Dennis Eckersley (1984)
- Rick Sutcliffe (1984-91)
- Fernando Ramsey (1992)
- Tony Muser (Coach) (1993-97)
- Dave Stevens (1997)
- Henry Rodriguez (1998-00)
- Oswaldo Mairena(2000)
- Chad Meyers (2001)
- Manny Aybar (2001)
- Miguel Cairo (2001)
- Todd Wellemeyer (2003-05)
- Phil Nevin (2006)
- Larry Rothschild (Coach) (2007)
Colorado Rockies
- Darren Holmes (1993-1997)
- Brian Rose (2000)
- Scott Elarton (2001)
- Brian Fuentes (2003-Present)
Houston Astros
- Don Wilson (1966-1974) (retired #)
Los Angeles/California/Anaheim/Los Angeles Angels of Anaheim
- Troy Percival (1995-2004)
Seattle Pilots/Milwaukee Brewers
- Floyd Wicker (1970-71)
- Jerry Bell (1971-74)
- Pete Broberg (1975-76)
- Sam Hinds (1977)
- Willie Mueller (1978)
- Dave LaPoint (1980)
- John Flinn (1980)
- Bob Gibson (1983-86)
- Mike Birkbeck (1987-89)
- Darren Holmes (1991-92)
- Mike Ignasiak (1993-95)
- Ben McDonald (1996-97)
- Chad Fox (1998-99, 2001-02)
- John Foster (2003)
- Ben Hendrickson (2004-06)
- Scott Linebrink (2007)
New York Yankees
- Billy Madden (This number was not verified for him, but is given on at least one site)
- Joe Pactwa (This number was not verified for him, but is given on at least one site)
- Lee Elia (This number was not verified for him, but is given on at least one site)
- Juan Bonilla (This number was not verified for him, but is given on at least one site)
- Billy Connors (Coach) (This number was not verified for him, but is given on at least one site)
- Britt Burns (This number was not verified for him, but is given on at least one site)
- Herb Karpel (1946)
- Roy Weatherly (1946)
- Charlie Silvera (part of 1948)
- Cuddles Marshall (1948)
- Jackie Jensen (1950, part of 1951)
- Bob Wiesler (1951)
- Bobby Hogue (1951-1952)
- Johnny Schmitz (1952)
- Ewell Blackwell (1952-1953)
- Tom Carroll (1955-1956)
- John Gabler (1959)
- Gabe Gabler (1960)
- Jack Cullen (1962)
- Lou Clinton (1966-1967)
- Bill Monbouquette (1967-1968)
- Lindy McDaniel (1968-1973)
- Rick Sawyer (1974)
- Tippy Martinez (1974-1976)
- Fran Healy (1976-1978)
- Ron Davis (1978)
- Larry McCall (1978)
- Bob Kammeyer (1978)
- Charlie Lau (1979-1981, Coach)
- Mickey Vernon (1982, Coach)
- Don Zimmer (1983, Coach; 1986, Coach)
- Gene Michael (1984-1986, Coach)
- Stan Williams (1987, Coach)
- Clete Boyer (1988, Coach)
- Clyde King (1988, Coach)
- Steve Shields (1988)
- Andy Hawkins (1989-1991)
- Scott Kamieniecki (1991)
- Tony Cloninger (1992-1998, Coach; 1999-2001, Coach)
- Darren Holmes (1998)
- Dan Miceli (2003)
- Gabe White (2003-2004)
- C.J. Nitkowski (2004)
- Chien-Ming Wang (2005-2007)
Pittsburgh Pirates
- Danny Murtaugh (manager)(retired #)
NHL
Detroit Red Wings
- Henrik Zetterberg (1999-)
College Football
Clemson University
- Anthony Waters (2003-2006)
See also:
0 - 00 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9
10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18 - 19
20 - 21 - 22 - 23 - 24 - 25 - 26 - 27 - 28 - 29
30 - 31 - 32 - 33 - 34 - 35 - 36 - 37 - 38 - 39
40 - 41 - 42 - 43 - 44 - 45 - 46 - 47 - 48 - 49
50 - 51 - 52 - 53 - 54 - 55 - 56 - 57 - 58 - 59
60 - 61 - 62 - 63 - 64 - 65 - 66 - 67 - 68 - 69
70 - 71 - 72 - 73 - 74 - 75 - 76 - 77 - 78 - 79
80 - 81 - 82 - 83 - 84 - 85 - 86 - 87 - 88 - 89
90 - 91 - 92 - 93 - 94 - 95 - 96 - 97 - 98 - 99
455 - 694