Ontario
Iroquoian · Boy · 3 syllables
Popularity & facts
Relative popularity index, 2010–2025Popularity over time
Popularity indexHistorical popularity from 1880–2025 · US Social Security Administration data
About the name Ontario
Ontario derives from the Iroquoian word "Ontarío" or "Ontariio," meaning "great lake" or "large water" (from "ontar" meaning lake and the suffix "-io" meaning great).
This meaning was compiled with AI assistance and is awaiting community review. Know this name well? Help verify or improve it.
Etymology
Ontario derives from the Iroquoian word "Ontarío" or "Ontariio," meaning "great lake" or "large water" (from "ontar" meaning lake and the suffix "-io" meaning great). The name is primarily used in English-speaking North America, particularly in Canada where it became the official name of the province in 1867, with historical roots in the Haudenosaunee (Iroquois) Confederacy's geography and language.
Ontario currently ranks #10,642 in the United States as a boy's name. It reached its peak popularity around 1991.
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Sibling name ideas
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