Karl-Anders Ingvar Wollter (born 7 May 1927), is a former Swedish diplomat.
Wollter was born in Lund, Sweden, the son of the editor Kjell Wollter his wife Elsa (née Ekwall) and brother of actor Sven Wollter. He grew up on Solhöjdsgatan in Långedrag, Gothenburg. After his mandatory military service Wollter got a US scholarship and took a Bachelor of Arts degree in the United States in 1949.
He was then an employee of SKF 1949-51 before he took a Candidate of Law degree at Lund University in 1955. He became an attaché at the Ministry for Foreign Affairs in 1955 and served in Helsinki in 1956, Brussels and Antwerp in 1957, Oslo in 1959, at the Foreign Ministry in 1960, Monrovia in 1961, at the Foreign Ministry again in 1963 and Moscow in 1966. Wollter became embassy counsellor in Moscow in 1970, consul general in Leningrad in 1972 and served at the Foreign Ministry in 1972. He was deputy director at the Foreign Ministry in 1972 and deputy director-general in 1973. Wollter then became Swedish ambassador in Lagos and Accra in 1974, also accredited in Porto-Novo and Niamey from 1976. He became ambassador in Buenos Aires in 1977 and there he was involved in the case of the missing Dagmar Hagelin. Wollter became ambassador in Mexico City in 1980 and was available to the Foreign Minister in 1985. Wollter became after that ambassador in Madrid in 1986 and was finally ambassador in Athens 1989-92 prior to his retirement.