Geoffrey Thomas Barnes, CBE, JP (18 August 1932 - 11 February 2010) was a British government official, civil servant, military serviceman and author.

Following this, Barnes held the posts of Police Civil Secretary until 1976 and then Assistant Director for the Commerce and Industry Department until 1977.

Over his four years in the role Barnes was at the forefront of many of the national and international security threats that faced Hong Kong, most notably, his responsibility in dealing with the exodus of Vietnamese Boat People in 1978–79.

[3] Barnes oversaw an expansion of the ICAC's institutional reach, building on its reputation as an effective regional example of dealing with anti-corruption.

[4] Barnes later worked as a consultant for the British Foreign & Commonwealth Office, offering insight, advice and expertise on anti-corruption and security measures.