US Presidents are limited to two terms, it doesn’t matter if they are consecutive. Grover Cleveland is the only other president who has served two non-consecutive terms.

Term-limits are a relatively recent addition though, the 22nd Amendment to the Constitution was only ratified in 1951 after Franklin Roosevelt served four terms.

And just an addendum for non-Americans who also aren’t likely/don’t have time to click the links, FDR (Franklin Delano Roosevelt) was elected to 4 terms but died 82 days into his 4th term. He was succeeded by the vice president, Harry S. Truman.

Prior to FDR all presidents had voluntarily limited themselves to 2 terms following the precedent of the first president, George Washington. FDR’s running for a 3rd term was controversial at the time; in 1940 the U.S. had not yet joined the Second World War and intervening was still controversial, although opposition dwindled with the fall of France. Interestingly, FDR seeking a 4th term was much less controversial with the U.S. in the thick of the war in 1944. The constitution was amended a few years later to make sure it didn’t happen again, though.