Alexander Pollock Moore (1867–1930) was an American diplomat, editor and publisher. Born in Pittsburgh on November 10, 1867, he was the publisher/owner of the Pittsburgh Leader when he married the stage actress Lillian Russell, becoming her fourth husband.
After she died on June 6, 1922, he served as an ambassador twice: to Spain from 1923 to 1925 and to Peru from 1928 to 1929. As the Ambassador to Peru he played a significant role in negotiating the Tacna-Arica boundary agreement, settling a border dispute between Peru and Chile.
| Diplomatic posts | ||
|---|---|---|
| Preceded by Cyrus E. Woods |
United States Ambassador to Spain 1923–1925 |
Succeeded by Ogden H. Hammond |
| Preceded by Miles Poindexter |
United States Ambassador to Peru 11 June 1928–10 July 1929 |
Succeeded by Fred Morris Dearing |