Christianson is a patronymic surname and an anglicized form of the Danish/Norwegian Christiansen.
Christianson, as a person, may refer to:
- Adolph M. Christianson (1877–1954), Norwegian-born former Chief Justice of the North Dakota Supreme Court
- Donna Jean Christianson (1931–2015), American politician
- John Christianson (1923–2010), Canadian politician and cabinet member
- Ken Christianson, American musician and composer; younger brother of Masanori Christianson
- Kipp Christianson, professional wrestler best known as Eli Cottonwood formerly from WWE's NXT
- Marc and Betty Christianson, American founders of the Dakota Zoo
- Marvin E. Christianson Sr. (1928–1969), American politician
- Masanori Mark Christianson (born 1976), Japanese born American musician and older brother of Ken Christianson
- Oliver Christianson, also known as Revilo ("Oliver" spelled backwards), American cartoonist, greeting card designer, and illustrator
- Stanley R. Christianson (1925–1950), United States Marine Corps Korean War posthumous Medal of Honor recipient
- Theodore Christianson (1883–1948), American politician; Governor of Minnesota and later U.S. Representative for Minnesota
- Theodore Christianson (judge) (1913–1955), American jurist; Minnesota Supreme Court justice
- Wei Christianson (born 1956), Chinese-born CEO of Morgan Stanley China and Co-CEO of Morgan Stanley Asia
- William C. Christianson (1892–1985), American jurist; Minnesota Supreme Court justice