John Whelan may refer to:
- Seán Ó Faoláin (1900–1991), Irish short story writer, born as John Francis Whelan
- John Whelan (Irish politician) (born 1961), Irish Labour Party politician
- John W. Whelan (1845–1906), American lawyer, farmer, and politician
- John "Rocky" Whelan (died 1855), English bushranger and serial killer in Van Diemen's Land, now Tasmania, Australia
See also
- Jack Whelan (disambiguation)