Trifles is a one-act play by Susan Glaspell. Her short story, "A Jury of Her Peers", was adapted from the play a year after its debut. It was first performed by the Provincetown Players at the Wharf Theatre in Provincetown, Massachusetts on August 8, 1916. In the original play, Glaspell played the role of one of the characters, Mrs. Hale. It is frequently anthologized in American literature textbooks.

The play begins as the county attorney, the sherrif, Mr. Hale, Mrs. Peters, and Mrs. Hale enter the Wright's empty farm house. On prompting from the county attorney, Mr. Hale recounts his visit to the house the previous day, when he found Mrs. Wright behaving strangely and found her husband upstairs with a rope around his neck, dead. Mr. Hale notes that, when he questioned her, Mrs. Wright claimed that she was fast asleep when someone strangled her husband.

Often hailed as one of the quintessential feminist plays, 'Trifles' earned Glaspell a Pulitzer Prize and renewed literary recognition.