Jonathan Mannah (13 September 1989 – 18 January 2013) was an Australian professional rugby league footballer. He played as a prop for the Cronulla Sharks (2009–2011) and the Parramatta Eels (2012) in the National Rugby League (NRL). Since 2013, the Johnny Mannah Cup, which is named in his honour, is annually competed for by both clubs he played for.