What can I do if I disagree with an umpire's decision?

On the field, accept it. The Spirit of Cricket in the Laws of Cricket (2017 Code, 4th Edition 2026) says to "accept the umpire's decision" and respect the authority of the umpires. An umpire's decision, once made, is final, although an umpire may alter a decision promptly provided it does not contradict Law 20.6 (Law 2.12). Where there is disagreement or dispute about any matter, the umpires together make the final decision (Law 2.11). The umpires are the sole judges of fair and unfair play (Law 2.6).

Showing dissent is an offence. Showing dissent at a decision by word or action is a Level 1 offence under Law 42, and serious dissent is Level 2. A team's first Level 1 offence brings a team-wide warning, and later offences bring 5 Penalty runs to the opposition.

How to raise it. Cricket Australia's Players Code of Behaviour says "Never argue with an umpire" and that if you disagree you raise it through your captain, coach or manager, during a break or after the game. Cricket Australia's Umpires Code of Behaviour asks umpires to be consistent, objective and courteous.

Appeals you have made: the fielding captain may withdraw an appeal only with the consent of the umpire concerned, before the next delivery (Law 31.8).

Sources: https://play.cricket.com.au/community/resources/codes-of-behaviour/players and https://www.lords.org/mcc/the-laws-of-cricket