Behrens is a surname of Germanic origin. Notable people with the surname include:
Alice Behrens, British Girl Guide
Heidi Behrens-Benedict, American politician
Herbert Behrens (born c. 1929), American tennis player
Hildegard Behrens (1937 – 2009), German opera singer
Howard Behrens (born 1933), American artist
Howie Behrens, member of rock band Pushmonkey
Isidor Behrens (1868 – 1951), Swedish sport club founder
Klaus Behrens (born 1941), German Olympic rower
Kurt Behrens (1884 – 1928), German Olympic diver
Leffmann Behrends (c. 1630 – 1714), Hanoverian financier
Paul Behrens (1893 – 1984), German clockmaker
Peter Behrens (1868 – 1940), German architect
Peter Behrens (musician) (1947 – 2016), German musician, actor and clown
Sam Behrens (born 1950), American actor
W. W. Behrens, Jr. (1922 – 1966), American naval officer and oceanographer