Posthuma (surname)
Posthuma is a Dutch surname that may refer to:
- Carst Posthuma, Dutch cricket player
- Danielle Posthuma, Dutch neuroscientist
- Douwe Bob Posthuma, Dutch singer-songwriter, known simply as Douwe Bob
- Folkert Posthuma, Dutch politician
- Jan Posthuma, Dutch volleyball player
- Joost Posthuma, Dutch road bicycle racer