Ernest de Sylly Hamilton Browne (11 July 1855 – 13 April 1946;[3] also E. de S. H. Browne) was an Irish tennis player who was active in the late 19th century.

In late May 1880 he entered the Irish Lawn Tennis Championships and reached the All-Comers final losing to William Renshaw in straight sets.

In 1881 he entered three tournaments this year including the South of England Championships losing in the 1st round.

At Irish Championships he lost a second match against Herbert Lawford retiring at two sets to one down.

He reached his second successive Cheltenham final in 1881 before losing to William Renshaw.