Keep Your Daughters Locked In (Arabic: سك على بناتك, romanized: Sukk 'Ala Banatak) is a popular Egyptian play that debuted in 1980. The comedy is a hallmark of Egyptian theatre and has enjoyed enduring popularity since its release. It is notable for its humorous take on family dynamics and social issues in Arabic societies, delivered through a blend of wit and slapstick comedy. The play, produced by the Arab Media Production Company in Riyadh (Arabic: الشركة العربية للإنتاج الإعلامي) and directed by Fouad El-Mohandes, was written by Lenin El-Ramly. It has a runtime of approximately four hours and is structured into three acts: Act One, Act Two (comprising the first and second scenes), and Act Three.

The play addresses the issues of marriage in Arab society. The central character, Dr. Raafat (played by Fouad El-Mohandes), is a widower eager to marry off his three daughters quickly so he can marry his beloved Esmat (played by Shwikar). Throughout the play, he encounters various problems. Meanwhile, his youngest daughter Soso (played by Sherihan) accidentally discovers his intention and that he loves a girl called Esmat, leading to a series of complications.

The play's first performance was on July 10, 1980. It received widespread acclaim and became an integral part of (Eid) holiday traditions in Arab countries, with many families watching it as a festive ritual. The play also contributed to the careers of its cast members, solidifying their status as prominent figures in Egyptian entertainment. It play has been written about and discussed in numerous books and films.