Grover Cleveland held the post of President of the United States of America on two separate occasions: 1885-1889 and 1893-1897. As he is the only President ever to serve two non-consecutive terms, he is considered to be both the 22^nd and 24^th President of the United States.

Thus, President George W. Bush Barack H. Obama is the 43^rd 44^th President, but only the 42^nd 43^rd person to hold that post.

Since a number of Prime Ministers of Canada (including John A. MacDonald, the first) have served non-consecutive terms, the number of Prime Ministers and the number of people who held that post remain identical.