Joseph Francis Ryter (born February 4, 1914) was a Democratic member of the United States House of Representatives from Connecticut. He represented Connecticut at-large and served a single term in Congress from January 3, 1945, to January 3, 1947. During this period he was a historical member of Congress in the immediate aftermath of World War II.

Ryter held the role of Representative and is recorded as a former officeholder. Serving as an at-large member meant he represented the entire state of Connecticut rather than a specific numbered congressional district. While details of his committee assignments, legislative initiatives, and subsequent career are not provided in the available metadata, his tenure from 1945 to 1947 places him among the mid-20th-century Democratic lawmakers who helped shape the postwar legislative landscape.