Billy Jennings (born 20 February 1952 in Hackney, London) is an English former footballer who played as a striker.
A former England Youth international, Jennings signed for West Ham United from Watford for £110,000 in 1974, shortly after becoming Watford Player of the Season. He made his Hammers debut on 7 September 1974 against Sheffield United, and was a member of the FA Cup winning team of 1974–75. The following season, West Ham got to the Final of the European Cup Winners' Cup, with Jennings scoring two goals in the away leg of club's Quarter-final. The second-leg home game against ADO Den Haag saw Hammers score three, to bring the aggregate score to 5–5, and go through on away goals.
After an Achilles injury in 1977, he failed to hold on to a regular place in the team and, after 99 league appearances and 34 goals for West Ham, moved to Leyton Orient in 1979.
Jennings scored 26 goals in 78 appearances for Orient before moving to Luton Town. Although he retired after 2 substitute appearances for the Hatters, he later played for non-league Dagenham, Bishop's Stortford and Heybridge Swifts.
Jennings now works as a football agent and runs Premier Management International, whose clients include former West Ham player Hayden Mullins.