Sean Harrington

Sean Harrington or Seán Harrington may refer to:


 * Seán Harrington (Irish republican) (1900–1976), IRA member from Dublin
 * Seán Harrington (Chief of Staff) (1912–1978), Chief of Staff of the IRA
 * Sean J. Harrington (born 1944), Canadian judge
 * Sean Harrington (basketball), 2002–03 Illinois Fighting Illini basketball player