Jesse David Armstrong (born December 13, 1970) is a British author, screenwriter, and producer. He is a co-creator of the Channel 4 comedy series Peep Show (2003–2015) and Fresh Meat (2011–2016), and the creator of the HBO satirical comedy-drama series Succession (2018–2023).

Armstrong has received many nominations and awards, including a nomination for the Academy Award for Best Adapted Screenplay for co-writing the film In the Loop (2009), and four consecutive wins of the Primetime Emmy Award for Outstanding Writing for a Drama Series for writing episodes of the first, second, third and fourth seasons of Succession.