Umpires who have all the authority to make decisions about all events which occur in the game, also play a great role along with players to decide the outcome of the match. In cricket, two umpires officiate on the field and for their help, the third umpire also officiates from TV rooms.

Umpires like Dickie Bird, David Shepherd, Simon Taufel, Rudi Koertzen, Ian Gould, Aleem Dar, etc are widely regarded as greatest umpires of all time. And here is a list of most matches as an umpire in Test, ODI, and T20I cricket. 

Most Matches as an Umpire in Test cricket -

132 - Aleem Dar (Pakistan)

128 - Steve Bucknor (West Indies)

108 - Rudi Koertzen (South Africa)

95 - Daryl Harper (Australia)

92 - David Shepherd (England)

84 - Billy Bowden (New Zealand)

78 - Daryl Hair (Australia)

74 - Ian Gould (England)

74 - Simon Taufel (Australia)

73 - S Venkataraghavn (India)

Most Matches as an Umpire in ODI cricket - 

209 - Rudi Koertzen (South Africa)

208 - Aleem Dar (Pakistan)

200 - Billy Bowden (New Zealand)

181 - Steve Bucknor (West Indies)

174 - Daryl Harper (Australia)

174 - Simon Taufel (Australia)

172 - David Shepherd (England)

154 - Russell Tiffin (Zimbabwe)

140 - Ian Gould (England)

139 - Daryl Hair (Australia)

Most Matches as an Umpire in T20I cricket -

49 - Ahsan Raza (Pakistan)

46 - Aleem Dar (Pakistan)

37 - Ian Gould (England)

36 - Shaun George (South Africa)

36 - Shozab Raza (Pakistan)

35 - Rod Tucker (Australia)

34 - Simon Taufel (Australia)

33 - Ruchira Palliyaguruge (Sri Lanka)

32 - Nigel Llong (England)

31 - Sharfuddoula (Bangladesh)

Most Matches as an Umpire in International cricket -

386 - Aleem Dar (Pakistan)

331 - Rudi Koertzen (South Africa)

309 - Steve Bucknor (West Indies)

308 - Billy Bowden (New Zealand)

282 - Simon Taufel (Australia)

279 - Daryl Harper (Australia)

264 - David Shepherd (England)

251 - Ian Gould (England)

224 - Nigel Llong (England) 

223 - Daryl Hair (Australia)