Richard H. Magruder (died September 23, 1884) was a politician from Maryland. He served in the Maryland Senate from 1882 to his death in 1884.
Richard H. Magruder was born in Prince George's County, Maryland.
Magruder was a Republican. In 1881, Magruder was elected to the Maryland Senate, representing Prince George's County, defeating his cousin Caleb Clarke Magruder Jr. He was re-elected in 1883. He served from 1882 to his death.
Magruder died on September 23, 1884, at the age of 42, at his home in Bladensburg, Maryland.