Lora Sarah La Mance (2 April 1857 – 9 May 1939) was an American horticulturist and writer, on gardening.

Born Lora Sarah Nichols, in 1857 in Indiana, the tenth and last child of Kezia (Waltman) and Nelson Irvin Nichols (1812-1865) - himself a twelfth child.

Lora married, on 14 April 1880, Marcus N. La Mance (1844-1906) who ran a dry-goods store, and was post master, and several times country treasurer.

After her husband's death in 1906 she became more active in the cause of temperance and became a national organizer and lecturer, traveling extensively, both in North America and overseas.

La Mance is buried with her husband in Pineville Cemetery McDonald County, Missouri.