Havant (/ˈhævənt/) is a constituency[n 1] in Hampshire represented in the House of Commons of the UK Parliament since 2015 by Alan Mak, a member of the Conservative Party.

However, the Conservatives were very nearly beaten by Labour in 2024, with a large chunk of their vote going to Reform, who attained a very credible third place – their best result in Hampshire.

1983–1997: The Borough of Havant wards of Barncroft, Battins, Bedhampton, Bondfields, Cowplain, Emsworth, Hart Plain, Hayling East, Hayling West, St Faith's, Warren Park, and Waterloo.

2024–present: The 2023 periodic review of Westminster constituencies, which was based on the ward structure in place on 1 December 2020, left the boundaries unchanged.

The current MP Alan Mak is the first person of Chinese and East Asian origin to be elected to the House of Commons of the United Kingdom.