Howard Dennis McNamara (November 22, 1891 – September 24, 1940) was a Canadian professional ice hockey defenceman.

Along with George, he joined the Halifax Crescents in the Maritime Professional Hockey League in 1911–12, thus forming the "Dynamite Twins".

Howard moved on to become captain of the Montreal Canadiens of the National Hockey Association when they won their first Stanley Cup in 1916.

After returning from Europe, George and Howard founded the McNamara Construction Company and developed it into a prosperous firm.

Howard McNamara died of a heart seizure on his yacht "Brigadier" during a fishing trip near Deseronto, Ontario.