Frans Adelaar (born 5 December 1960) is a Dutch football manager and former professional player.

He most recently was manager of Dutch top amateur side IJsselmeervogels.

After retiring as a player in 1993, Adelaar has managed GVVV, Utrecht, Akratitos,[1] De Graafschap,[2] ADO Den Haag[3] and Volendam.

[6] In April 2012, Adelaar took charge af Slovakian side MŠK Žilina,[7] with whom he won the domestic league and cup double in 2012 but was sacked in January 2013.

[8] In March 2014, he was appointed manager of Dutch amateur side IJsselmeervogels until the end of the 2013/14 season.