Irwin Delmore Davidson (January 2, 1906 – August 1, 1981) was a Democratic-Liberal member of the United States House of Representatives from New York.
Davidson was born in New York City. He graduated from New York University in 1927 and New York University School of Law in 1928. He served in the New York State Assembly from 1937 until 1948. He was elected to Congress in 1954 and served from January 3, 1955 until his resignation on December 31, 1956. He served on the New York Supreme Court from 1963 until 1974. He died in New Rochelle, New York.
| New York Assembly | ||
|---|---|---|
| Preceded by Saul Streit |
New York State Assembly, New York County 7th District 1937 |
Succeeded by William Middleton |
| Preceded by William Middleton |
New York State Assembly, New York County 7th District 1939–1944 |
Succeeded by Patrick H. Sullivan |
| Preceded by Owen McGivern |
New York State Assembly, New York County 5th District 1945–1948 |
Succeeded by Monroe Flegenheimer |
| United States House of Representatives | ||
| Preceded by Franklin D. Roosevelt, Jr. |
Member of the U.S. House of Representatives from New York's 20th congressional district 1955–1956 |
Succeeded by Ludwig Teller |