The 2016 Maryland Democratic presidential primary was held on April 26 in the U.S. state of Maryland as one of the Democratic Party's primaries ahead of the 2016 presidential election.

Presidential primaries and caucuses were organized by the Democratic Party to select the 4,051 delegates to the 2016 Democratic National Convention held July 25–28 and determine the nominee for president in the 2016 United States presidential election. The elections took place within all fifty U.S. states, the District of Columbia, five U.S. territories, and Democrats Abroad and occurred between February 1 and June 14, 2016.