The Children's Hour is a play by the late American playwright Lillian Hellman.

"Two women, Karen Wright and Martha Dobie, have worked hard to build a girl's boarding school in a refurbished farmhouse. They run and teach the school with the somewhat unwelcome help of Lily Mortar, Martha's aunt. This taught drama reveals the terrible consequences of one pupil's mischievousness, disobedience and lies: together with the community's willingness to believe and spread malicious gossip, three innocent lives are destroyed..."

The 2011 London Comedy Theatre production will feature Keira Knightley and Elisabeth Moss.