Ronto can refer to:
* ronto-, a
metric prefix
A metric prefix is a unit prefix that precedes a basic unit of measure to indicate a multiple or submultiple of the unit. All metric prefixes used today are decadic. Each prefix has a unique symbol that is prepended to any unit symbol. The pre ...
denoting a factor of 10
−27
* ''Rontó'', the Hungarian name for Rontău village,
Sânmartin Commune, Bihor County, Romania
*
Toronto
Toronto ( ; or ) is the capital city of the Canadian province of Ontario. With a recorded population of 2,794,356 in 2021, it is the most populous city in Canada and the fourth most populous city in North America. The city is the ancho ...
, a city in Canada
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