Harriel "Hal" G. Geiger (c. 1840 – June 11, 1886)[1] was an American politician, blacksmith, and lawyer.
Born into slavery in South Carolina, he was elected to the Texas House of Representatives as a candidate for the Greenback Party.
He lost his re-election campaign to E. C. Mobley but won the seat in a special election, after Geiger moved out of the district, and served from April 1882 until January 1883.
Geiger and Robert A. Kerr were the only African-Americans to be elected into the Texas Legislature as representatives for the Greenback Party.
He was murdered, shot 5 times at point blank range, by Judge O. D. Cannon for making "insolent" remarks and not showing enough deference to his honor.