Philip Sheppard Grimwade (9 April 1912 – 7 September 1961) was an Australian politician.
He was born in Geelong to medical practitioner Alfred Sheppard Grimwade and Amy Gertrude Tanner.
During World War II he served 20th Motor Regiment.
He served on Pyalong Shire Council from 1939 to 1961, and was president from 1943 to 1944 and from 1956 to 1957.
In 1947 he was elected to the Victorian Legislative Assembly as the Liberal member for Goulburn, but he was defeated after a single term in 1950.