Henry Ames Blood (June 7, 1836 – December 30, 1900) was an American civil servant, poet, playwright, and historian.

About 1861, he moved to Washington, DC, where he was employed for most of his adult life, to accept a clerkship in the Internal Revenue Department.

As a young government worker in Washington, DC, Blood was in the city at the time of Abraham Lincoln's assassination.

His letters to his mother on the aftermath of the assassination and the trial of the conspirators were discovered in 2005 in one of the homes of Robert Todd Lincoln, and reveal an interesting impression of contemporary public sentiment concerning the events.

His poetry was highly regarded and anthologized in his own day, when he was considered in the first rank of American poets, but has been dismissed as overly sentimental by later critics.