Samuel Paul (Pete) Dixon, 55, a combat veteran of World War II and a retired management analyst for the Department of Defense, died of a brain tumor Thursday at the Hospice Unit of the Washington Home.

Mr. Dixon was born in Westernport, Md., and grew up in Keyser, W. Va. He enlisted in the Army in 1943 and served in the Pacific Theater and with the Occupation Forces in Germany following the war. He then served at posts in this country and overseas before retiring in 1966 with the rank of sergeant major.

In 1967, Dixon joined the Defense Department as a management analyst in Chicago. He transferred to the Pentagon in 1970 and was assigned to the department's Alexandria field office before retiring for health reasons about six months ago.

He lived in Alexandria.

Survivors include his wife, Joy L. of Alexandria; two sons, Gary T., of Arlington, and Air Force Capt. Gregory P., of Andrews Air Force Base, Md.; two sisters, Virginia Bomboy of Bayard, W. Va., and Mary Watts of Ridgley, W. Va., and two grandsons.

The family suggests that expressions of sympathy be in the form of contributions to the Hospice Unit at the Washington Home here.