Lars Gabriel von Haartman (23 September 1789 Turku - 16 December 1859 Merimasku) was a Swedish-speaking Finnish politician. Along with Count Gustaf Mauritz Armfelt, he was one of the most prominent politicians who were in favour of developing Finland as part of the Russian Empire instead of striving towards independence.

He was a Vice-chairman of the economic division of the Senate of Finland (1841–1858).

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