Philip Henri Gilbert (October 25, 1870 – October 18, 1932) was a lawyer and Democratic politician from Napoleonville in Assumption Parish in South Louisiana.
Gilbert was the district attorney of the Louisiana 27th Judicial District from 1908 to 1916 and judge of the same district from 1916 to 1920.
As the President of the Louisiana State Senate from 1924 to 1926, Gilbert succeeded to the lieutenant governorship on an interim basis until the expiration of the regular term in 1928.