| Adam M. Byrd | |
| District: | 5th |
| State: | Mississippi |
| Term: | March 4, 1903 – March 3, 1911 |
| Preceded: | John S. Williams |
| Succeeded: | Samuel A. Witherspoon |
| Office2: | Member of the Mississippi House of Representatives |
| Term2: | 1896-1897 |
| Office3: | Member of the Mississippi Senate |
| Term3: | 1889-1896 |
| Party: | Democratic |
| Birth Name: | Adam Monroe Byrd |
| Birth Date: | 6 July 1859 |
| Birth Place: | Sumter County, Alabama |
| Death Place: | Hot Springs, Arkansas |
| Occupation: | Lawyer |
Adam Monroe Byrd (July 6, 1859 – June 21, 1912) was a U.S. Representative from Mississippi.
Born in Sumter County, Alabama, Byrd moved to Neshoba County, Mississippi. He attended the common schools and Cooper Institute in Daleville, Mississippi. He graduated from the Cumberland School of Law at Cumberland University, Lebanon, Tennessee, in 1884. He was admitted to the bar in 1885 and commenced practice in Philadelphia, Mississippi. He served as superintendent of education for Neshoba County from 1887 to 1889. He served as a member of the State senate from 1889 to 1896. He served in the State house of representatives in 1896 and 1897, when he resigned. He served as prosecuting attorney for the tenth judicial district in 1897. He served as judge of the sixth chancery district from 1897 until his resignation in 1903.
Byrd was elected as a Democrat to the Fifty-eighth and to the three succeeding Congresses (March 4, 1903 – March 3, 1911). He was an unsuccessful candidate for renomination in 1910. After his time in Congress, he resumed the practice of law in Philadelphia, Mississippi. He died at Hot Springs, Arkansas on June 21, 1912. He was interred in Town Cemetery in Philadelphia, Mississippi.