Tim Molenaar (born 19 February 1981 in Masterton, New Zealand) is a rugby union player for Moseley in the RFU Championship. He plays as a centre.
Molenaar signed for Gloucester Rugby from Nottingham in August 2009 after a deal to sign Seru Rabeni fell through.
On 28 October 2013, it was announced that Harlequins have signed Tim Molenaar to a short-term deal following his release from Gloucester Rugby Following his release from Harlequins, Molenaar signed for newly promoted side London Welsh for the 2014-15 season. On 8 June 2015, Molenaar returned to the RFU Championship to sign for Moseley from the 2015-16 season.