Union Cemetery may refer to:

Canada Union Cemetery (Calgary), Alberta

United States California Placerville Union Cemetery Union Cemetery (Redwood City, California), listed on the National Register of Historic Places (NRHP)

Connecticut Union Cemetery (Easton, Connecticut) Fair Haven Union Cemetery

Delaware Newark Union Church and Cemetery, Brandywine Hundred

Iowa Union Cemetery Gardener's Cottage, Iowa Falls, listed on the NRHP

Maryland Rockville Cemetery (Maryland), Rockville, sometimes referred to as "Rockville Union Cemetery"

Massachusetts Union Cemetery, Holbrook, burial place of George Mason Lovering

Missouri Union Cemetery (Kansas City, Missouri)

New York East Line Union Cemetery, Malta Moravia Union Cemetery, Moravia, listed on the NRHP Greenwood Union Cemetery, Rye and Harrison Union Field Cemetery, Ridgewood, Queens, New York City

North Carolina Union Cemetery (Greensboro, North Carolina), listed on the NRHP

Ohio Union Cemetery-Beatty Park, Steubenville, listed on the NRHP

Pennsylvania Union Cemetery (Bellefonte, Pennsylvania)

Washington Union Cemetery-Pioneer Calvary Cemetery, Tumwater, listed on the NRHP in Thurston County