A Soyuz capsule carrying NASA astronaut Scott Kelly and Russian cosmonauts Mikhail Kornienko, Sergey Volkov landed in Kazakhstan on Wednesday, NASA television reported.
The landing took place in a steppe near the Kazakh city of Zhezkazgan at 10:26 local time (0426 GMT), it said.
A search and rescue team has located the capsule.
NASA astronaut Scott Kelly is closing the door on a space mission that has spanned a U.S.-record of 340 days.
They had circled the world 5,440 times and experienced 10,880 orbital sunrises and sunsets.