Gilbert Marquis LaFayette Johnson (November 4, 1837 – January 9, 1871) was an officer in the Union Army from Indiana during the American Civil War, reaching the rank of colonel.

In 1866, he was nominated and confirmed for appointment to the grade of brevet brigadier general.

On January 13, 1866, President Andrew Johnson nominated Gilbert Johnson for appointment to the grade of brevet brigadier general of volunteers, to rank from March 13, 1865, and the United States Senate confirmed the appointment on March 12, 1866.

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