Alexander Gilmore Cochran (March 20, 1846 – May 1, 1928) was an American attorney and one-term Democratic member of the U.S. House of Representatives from Pennsylvania.

Cochran was born in Allegheny City, Pennsylvania (now part of Pittsburgh).

He was an unsuccessful candidate for reelection in 1876 and so resumed the practice of law in Pittsburgh.

In 1879 he moved to St. Louis, Missouri where he spent more than twenty years as general solicitor for the Missouri Pacific Railway Company and head of its legal department in the West.

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