To droop means to hang down, to sag, particularly if limp. Droop may refer to:

• Droop nose (aeronautics), an adjustable nose found on some supersonic aircraft
• Droop quota, a type of quota for counting and transferring votes in an election
• Droop speed control, a speed control mode of a prime mover driving a synchronous generator connected to an electrical grid.
• Leading-edge droop flap, a type of high-lift device found on the wings of some aircraft
• Leading-edge droop, a feature of some aircraft wings
• LED droop, the lowering of efficiency of light-emitting diodes at higher electrical currents
• The steady-state error of a proportional controller
• Voltage droop, the intentional loss in output voltage of a power supply as it drives a load

• Marie Luise Droop (1890-1959), a German writer and producer
• Henry Richmond Droop (1831–1884), an English mathematician
• John Percival Droop (1882–1963), a British classical archaeologist
• Droop-E, American rapper

• Droopy, cartoon character
• Drooper, a character from the television show The Banana Splits
• Droop, a muppet character from the television series The Muppet Show
• Droop-a-Long, a cartoon character from the segment Ricochet Rabbit & Droop-a-Long in The Magilla Gorilla Show

• Droop, West Virginia
• Droop Hill, a mountain landform in the Kincardine and Mearns region of Aberdeenshire, Scotland
• Droop Mountain, a small mountain in the Allegheny Mountains in West Virginia, United States

• Ptosis (disambiguation), drooping of body parts
• Droop cup, a type of bowl from Ancient Greece / Laconia, named after John Percival Droop
• "Droop" (RuPaul's Drag Race), an episode of the American television series RuPaul's Drag Race

• Drupe, a form of fruit
• Drop (disambiguation)
• All pages with titles beginning with Droop