Kay Hagan (1953–2019) was a U.S. Senator from North Carolina from 2009 to 2015. Senator Hagan may also refer to:
Bob Hagan (born 1949), Ohio State Senate Edward P. Hagan (1848–1893), New York State Senate G. Elliott Hagan (1916–1990), Georgia State Senate
See also Hagan (surname) David Haggan (fl. 2010s–present), Maine State Senate