Grace Mead de Laguna (28 September 1878 – 17 February 1978) was an American philosopher who taught at Bryn Mawr College in Pennsylvania.

[1] Her father had served with the 17th Connecticut Volunteers during the Civil War,[2][4] He would later work as a land agent for the Northern Pacific Railway whilst it was being built.

[4] This led to the family moving, whilst Grace was young, to the (then) Washington Territory, first to Cheney, then Tacoma, where she received a pioneer upbringing.

[4][5][6] After holding a position at the University of Michigan from 1905,[6] Theodore served, from 1907, as a professor of philosophy at Bryn Mawr College in Pennsylvania.

[8][9] Her son Wallace de Laguna, who was born in 1910, was a geologist who worked for the U.S. Geological Survey and later for the Oak Ridge National Laboratories in Tennessee.