Francis Theodore Frost (December 21, 1843 – August 25, 1916) was a Canadian manufacturer and politician.

[4] In 1895 Frost had the grand home Elmcroft in Smiths Falls built for himself and his wife.

In 1902 Frost was appointed to the Ottawa Improvement Commission, the original predecessor to the National Capital Commission, and was involved with the original establishment in Ottawa of Rockliffe Park and the drive from Rideau Hall to Parliament Hill and along the Rideau Canal.

Frost & Wood was acquired by, Cockshutt Plow Company in 1924 and continued as a division into the 1950s.

The Frost & Wood Smith Falls complex was completely demolished in the early 1960s.