Costiniu is a Romanian surname. Notable people with the surname include:
- Florin Costiniu (born 1954), Romanian lawyer and judge
- Geo Costiniu (1950−2013), Romanian actor
This page lists people with the surname Costiniu.
If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link.
If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link.