Henrik Lennart Blomstedt (26 June 1921 – 23 June 2009) was a Finnish diplomat and lawyer.
Blomstedt was born in Helsinki.
He was an ambassador in Addis Ababa, Dar es Salaam, Lusaka and Nairobi between 1965 and 1969, and there was also a representative of Finland at the Organization of African Unity, the Ministry for Foreign Affairs 1969-1970, the Head of the Legal Department from 1970 to 1973, the Ambassador in The Hague from 1973 to 1978, , and in Seoul between 1978 and 1984 and in Oslo from 1984 to 1988.