West Ham manager win ratios laid bare
| Manager Name | Period | Games | Won | Drew | Lost | Win % |
| Syd King | 1901-1932 | 638 | 248 | 146 | 244 | 38.87% |
| Charlie Paynter | 1932-1950 | 480 | 198 | 116 | 166 | 41.25% |
| Ted Fenton | 1950-1961 | 483 | 192 | 107 | 184 | 39.75% |
| Ron Greenwood | 1961-1974 | 613 | 215 | 165 | 233 | 35.07% |
| John Lyall | 1974-1989 | 708 | 277 | 176 | 255 | 39.12% |
| Lou Macari | 1989-1990 | 38 | 14 | 12 | 12 | 36.84% |
| Ronnie Boyce* | 1990 | 1 | 0 | 1 | 0 | 0.00% |
| Billy Bonds | 1990-1994 | 227 | 99 | 61 | 67 | 43.61% |
| Harry Redknapp | 1994-2001 | 327 | 121 | 85 | 121 | 37.00% |
| Glenn Roeder | 2001-2003 | 86 | 27 | 23 | 36 | 31.40% |
| Trevor Brooking* | 2003 | 14 | 9 | 4 | 1 | 64.29% |
| Alan Pardew | 2003-2006 | 163 | 67 | 38 | 58 | 41.10% |
| Alan Curbishley | 2006-2008 | 71 | 28 | 14 | 29 | 39.44% |
| Kevin Keen* | 2008 | 1 | 0 | 0 | 1 | 0.00% |
| Gianfranco Zola | 2008-2010 | 80 | 23 | 21 | 36 | 28.75% |
| Avram Grant | 2010-2011 | 47 | 15 | 12 | 20 | 31.91% |
| Kevin Keen* | 2011 | 1 | 0 | 0 | 1 | 0.00% |
| Sam Allardyce | 2011-2015 | 181 | 69 | 45 | 67 | 38.12% |
| Slaven Bilic | 2015-2017 | 111 | 42 | 30 | 39 | 37.84% |
| David Moyes | 2017-2018 | 31 | 9 | 10 | 12 | 29.03% |
| Manual Pellegrini | 2018-2019 | 64 | 24 | 11 | 29 | 37.50% |
| David Moyes | 2020-Present | 12 | 3 | 2 | 7 | 25.00% |
David Moyes managed a 29% win ratio in his first period in charge but has dropped to 25% in his first twelve games in charge in his second stint.
Manuel Pellegrini finished his tenature with a 37.5% win ratio.
Most successful manager was Trevor Brooking with a win ratio of 64%
Outside of Caretaker managers Billy Bonds was the most successful manager with a win ratio of 43% while outside of Moyes second stint Gianfranco Zola has been the worst with a win ration of 28%.