Quin may refer to: Quin (name), including a list of people with the name Quin, colloquially, one of a set of quintuplets, a multiple birth of five individuals Quin (Sigilverse), a fictional planet Quin, County Clare, a village in County Clare, Ireland QUIN, quinolinic acid, a dicarboxylic acid with a pyridine backbone Quin House, nickname for Algonquin Club, Boston, Massachusetts See also O'Quin Port Quin Quin Rose, Japanese video game development company Quin-Harkin Quinn (disambiguation) River Quin Wyndham-Quin