Proctor Lambert Dougherty, Sr. (July 9, 1873 – October 15, 1966) was a Washington, D.C., politician who served as the 15th president of the Board of Commissioners of the District of Columbia from 1926 to 1930.

[2] Dougherty was a founder of the Citizens' Advisory Council in 1924 and involved with numerous professional and civic organizations.

He was a recess appointment, made to fill the seat of embattled commissioner Frederick A. Fenning, who resigned before his term was complete in the face of impeachment.

In December of that year, when Cuno Rudolph resigned from the board, Dougherty took his place as president and served in that position until April 1930.

During his time the board began adding street lights to the city and started work on the Municipal Building downtown.