Curtis H. Gregg (August 9, 1865 – January 18, 1933) was a Democratic member of the U.S. House of Representatives from Pennsylvania.

He was engaged in teaching and worked as associate editor of the Greensburg Evening Press from 1883 to 1887.

He studied law, was admitted to the bar in 1888, and commenced practice in Greensburg.

He became reengaged in the practice of law at Greensburg, until his death there in 1933, aged 67; he was interred in St. Clair Cemetery.

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