Sir Mark Steven Spencer (born 20 January 1970) is a British politician who served as Minister of State for Food, Farming and Fisheries between 2022 and 2024.

A former dairy farm, the business diversified into growing potatoes and vegetables and producing free-range eggs, beef and lamb, and employing around 50 local people.

[9] With his farming background, Spencer has also focused in Parliament on agriculture and rural communities, with an interest in ensuring that British food production is recognised and promoted as "world class".

[12] Writing in The Spectator magazine, Isabel Hardman criticised his response, suggesting his rush to defend government policy without showing concern for the constituent was an example of "political tribalism at its worst".

[12] The Telegraph reported in August 2015 that Spencer, in a letter to a constituent, had suggested that Extremism Disruption Orders (EDOs) could be used against Christian teachers who tell schoolchildren that same-sex marriage is wrong.

Simon Calvert, deputy director of the Christian Institute, an evangelical pressure group, responded: "I am genuinely shocked that we have an MP supporting the idea of teachers being branded extremists for teaching that marriage is between a man and a woman".

[16] As a backbench MP, Spencer chose to support the official position of the Government and campaigned for the United Kingdom to remain in the European Union before the EU membership referendum on 23 June 2016.

[18] Spencer was criticised in 2017 by the Parliamentary Commissioner for Standards for misusing taxpayers' resources, such as the MPs' newsletter, to link to "overtly party political content".

The Sunday Times reported that Spencer, as Chief Whip, was told of the alleged incident a month before the arrest, and did not take action.