Cogan may refer to:
- People
- Alma Cogan, English singer
- Andrew Cogan
- Barry Cogan (footballer)
- Barry Cogan (politician)
- Brian Cogan
- Dean Cogan, Irish priest and writer
- Fanny Cogan
- Frank Cogan
- Henri Cogan, wrestler, stuntman, fight choreographer, actor
- Kevin Cogan, Formula 1 driver
- Maggie Cogan
- Patrick Cogan
- Robert Cogan
- Sara Cogan
- Thomas Cogan (1736–1818), English physician and writer
- Tony Cogan
- William Cogan
- Places
- Cogan, Vale of Glamorgan, A suburb of Penarth in South Wales
- Cogan railway station, serving Cogan, Vale of Glamorgan.
- Cogan House Township, Pennsylvania, a township in Lycoming County
- Cogan House Covered Bridge in the township
- Other
- Cogan syndrome, a rare disorder