Sydney Emanuel Mudd I (February 12, 1858 – October 21, 1911) was a politician, elected as Speaker of the Maryland House of Delegates (1896) and as a Republican to the United States House of Representatives (1890–1891; 1897–1911), at a time of dominance by Democrats in much of the state.
He was first seated by Congress in 1890 after it found in his favor in relation to the contested 1888 election in Maryland's 5th congressional district, which was marked by fraud and intimidation.