Agger is a Danish surname. Notable people with the surname include:
- Daniel Agger (born 1984), footballer
- Knud Agger (1895–1973), painter
- Mikkel Agger (born 1992), Danish footballer
- Nicolaj Agger (born 1988), footballer
- Poul Agger, canoer
Agger is a Danish surname. Notable people with the surname include: