Cornelius Comegys Jadwin (March 27, 1835 – August 17, 1913) was a Republican member of the U.S. House of Representatives from Pennsylvania.

Cornelius Comegys Jadwin was born in Carbondale, Pennsylvania.

He entered the drug business and located in Honesdale, Pennsylvania, in 1862.

Jadwin elected as a Republican to the Forty-seventh Congress.

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