Valentijn Lietmeijer (born May 8, 1991) is a retired Dutch professional basketball player.

[1] Lietmeijer's first professional club was Gasterra Flames from his hometown Groningen.

After being named Dutch Basketball League Rookie of the Year, he left the club and joined Aris Leeuwarden.

[3] On June 23, 2015, he signed a three-year deal with SPM Shoeters Den Bosch.

[5] After another year with injuries Lietmeijer decided to quit professional basketball in June 2018.