Marius Marian Croitoru (born 2 October 1980) is a Romanian professional football manager and former player.

[1] After six seasons with FCM Bacău, Croitoru moved to fellow first league club FC Vaslui, where he impressed alongside Viorel Frunză.

[3] In the summer of 2019, although still not in possession of a UEFA Pro Licence, Croitoru was appointed as head coach of Liga I club Botoșani.

[5] On 23 June 2022, Croitoru was appointed as head coach of Liga I club FC U Craiova, agreeing to a two-year contract.

[7] On 26 October 2022, Croitoru was appointed as head coach of Liga I club Argeș Pitești, agreeing to a one-and-a-half-year contract.