Kooijman
Kooijman is a Dutch language occupational surname. Kooij is an archaic spelling of kooi, generally referring to a pen or a duck decoy, and the name often originated with a herder, duck breeder, or cage maker. The ij digraph is often replaced with a "y". Among other variant spellings are Cooijman, Kooijmans, and Kooiman. People with the surname include:
;Kooijman
;Kooyman
- Barbara Kooyman, American singer-songwriter
- Frank I. Kooyman, Dutch-born Mormon hymnwriter
- Piet Kooyman, Dutch racing cyclist
- George Kooymans, Dutch guitarist and vocalist of Golden Earring