Sean Patrick Hayes (born June 26, 1970) is an Emmy award-winning American actor and comedian. He is perhaps best known for his role as Jack McFarland in the sitcom Will & Grace. Stated in interview on Inside the Actors Studio

Seán Hayes (otherwise known as John Hayes; died 1941), was a Sinn Féin member of Dáil Éireann in Ireland. He was a newspaper editor (the Cork County Southern Star of Skibbereen) and political propagandist.

He was elected unopposed for Cork West in 1918. He did not take the seat he had won in the United Kingdom House of Commons, but like other members of his party he joined the revolutionary First Dáil 1919-1921. He represented the constituency of Cork Mid, North, South, South-East and West 1921-1923. He became a member of the pro-Treaty faction of Sinn Féin before the Irish general election, 1922. He did not seek re-election at the 27 August 1923 general election.

Hayes was arrested during a raid on party offices in Dublin, in November 1919. As a result he was sentenced to three months imprisonment. He was re-arrested in 1920.

He had a total of 12 children - all deceased at this time. He died 1941. He was a member of the IRA in addition to Sinn Féin and Dáil Éireann. He was also reputedly a member of Tom Barry's Flying Column in West Cork.

Sean Padrick Hayes is an American singer-songwriter. He has been described as playing Appalachian Ambient Folk music like an Irish rooster channeling Nick Drake... "All night til sunrise music" .

Born on August 27, 1969 in New York City, a few years later the Hayes family moved to North Carolina. Sean began playing traditional American and Irish music with a band called the Boys of Bluehill. He traveled the south, from the Black Mountain Music festival (LEAF Festival) in the Blueridge Mountains down to Charleston, South Carolina and eventually found his way to San Francisco.

Sean Hayes has lived in San Francisco since 1992, he has released five independent records, appeared on NPR's All Things Considered, KCRW's Morning Becomes Eclectic, and WFUV's Whole Wide World with Rita Houston. He is a frequent guest of the acclaimed Los Angeles Largo (nightclub) and has played with many fine musicians such as Jolie Holland, Ara Anderson, Etienne de Rocher, Todd Roper, Rob Reich, Shahzad Ismaily and Ches Smith.

Hayes' music gained additional exposure through the re-mix of his song "Rattlesnake Charm" by Mark Farina and Stephane Pompougnac on Hôtel Costes, Vol. 8. His song "3 A.M." is also featured on the soundtrack for the television show Kyle XY and his song "A Thousand Tiny Pieces", performed by The Be Good Tanyas, has appeared on the television show Brothers & Sisters (2006 TV series). In addition, his song "Turnaroundturnmeon" is part of Big Change: songs for FINCA, an album curated by Natalie Portman to benefit the anti-poverty organization FINCA.

Seán Hayes (1890 - 16 February 1968) was a Fianna Fáil politician in Ireland. He was a Teachta Dala (TD) for 10 year, and later a senator for 22 years.

Hayes was elected at the June 1927 general election as a TD for Tipperary, and held the seat until his defeat at the 1937 general election. He stood again at the 1943 general election and at by-election in 1947, but never returned to the Dáil.

In the 1938 election to the reconstituted Seanad Éireann, he was elected in the Labour Panel, and held the seat at the further election later that year to the 3rd Seanad. He was re-elected on the Labour Panel in the 1948 election to the 6th Seanad, and at subsequent elections until he stepped down at the 1965 election.