Sarah Hartwig (24 February, 1773 York - 30 April 1815, Freetown) was an English missionary teacher in Sierra Leone, West Africa.
[3] In 1804, she married Peter Hartwig a German missionary from Prussia in Clapham, London.
Between 1804 and 1806, she managed a missionary school attached to her home in Freetown upon the encouragement of Governor William Day.
She was sent back to England in 1806 because of the conflict between her spouse and vice governor Thomas Ludlam.
Her widower abandoned his missionary work in 1807 and engaged in the slave trade, marrying an African wife and settling on the Rio Pongo.