What is the name of the spaceship in Interstellar?

The spaceship in Interstellar is called the Endurance.

The Endurance is the main spacecraft used for NASA’s mission to find a habitable world for humanity. It carries Cooper, Amelia Brand, Romilly, Doyle, and the robots TARS and CASE through the wormhole near Saturn and onward toward planets orbiting Gargantua.

Its circular design consists of 12 connected capsules arranged like a clock. The modules provide engines, living quarters, laboratories, cockpit functions, and equipment for establishing settlements. The production design was influenced partly by the International Space Station, with a practical, industrial appearance rather than a sleek fictional spacecraft style.

The Endurance is sometimes confused with the Ranger or the lander, which are smaller craft carried by the mothership. The Ranger is designed for atmospheric flight, while the lander transports equipment to planetary surfaces. The Endurance itself is the expedition’s central vessel and the canonical answer to the question.