Jonathan Mannah (13 September 1989 – 18 January 2013) was an Australian professional rugby league footballer.

He played as a prop for the Cronulla-Sutherland Sharks (2009–2011) and the Parramatta Eels (2012) in the National Rugby League (NRL).

[3][4] Since 2013, the Johnny Mannah Cup, which is named in his honour, is annually competed for by both clubs he played for.

In November 2011, after amassing 24 appearances in three seasons with the Sharks he signed with Parramatta, returning to his junior club and to play with his brother, Tim.

[10][11][12] His funeral was held at Faith Baptist Church[13] in Regents Park, Sydney, on 21 January 2013.