The city of Ottawa, Canada, held municipal elections on December 3, 1956.
Controller George Nelms is acclaimed as mayor, the last election in Ottawa's history where a candidate for mayor has run unopposed. Nelms was not the incumbent mayor. The incumbent was Charlotte Whitton who decided not to run again.
After four years of wards just having numbers, names were returned to each of the wards. The size of council also increased by one ward, with the split of Ward 1 into two wards. 
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