Wachtmeister is a Swedish and Austrian surname. Notable people with the surname include:
- Axel Wachtmeister, Count of Mälsåker (1643–1699), count and Field Marshal
- Constance Wachtmeister (1838–1910), English/French countess, theosophist
- Erik Wachtmeister (born 1955), co-founder of ASmallWorld
- Hans Wachtmeister (1642–1714), admiral general of the Swedish Navy and adviser to King Charles XI
- Louise Wachtmeister (born 1978), co-founder of ASmallWorld
- Ian Wachtmeister (1932–2017), Swedish industrialist and politician
- Rosina Wachtmeister (born 1939), Austrian artist
- Ted Wachtmeister (1892–1975), Swedish rower who competed in the 1912 Summer Olympics
- Wilhelm Wachtmeister (1923–2012), Swedish career diplomat who served as the Swedish Ambassador to the United States