John Tams (born 16 February 1949) is an English actor, singer, songwriter, composer and musician born in Holbrook, Derbyshire, the son of a publican. He first worked as a reporter for the Ripley & Heanor News later working for BBC Radio Derby and BBC Radio Nottingham. Tams had an early part in The Rainbow (1988), and may be best known for playing a regular supporting role in the ITV drama series Sharpe, as rifleman Daniel Hagman. He also co-wrote the music for each film (18, as of November 2008) alongside Dominic Muldowney.

Tams was a member of Derbyshire folk group Muckram Wakes in the 1970s, then worked with Ashley Hutchings as singer and melodeon-player on albums including Son of Morris On, and as a member of the British folk rock group Albion Band. Splitting with Hutchings in the 1980s, he formed Home Service. In the following decades, Tams spent time fronting Home Service (Best Live Act at the BBC Folk Awards 2012) or in a duo with Barry Coope (Duo of the Year 2008). In 2015 it was announced that Tams was retiring from Home Service.