The Subversive Activities Control Board (SACB) was a United States federal committee.

[1] It was the subject of a landmark United States Supreme Court decision of the Warren Court, Communist Party v. Subversive Activities Control Board, 351 U.S. 115 (1956), that would lead to later decisions that rendered the Board powerless.

[2] The board was founded on November 1, 1950, pursuant to the McCarran Internal Security Act.

[3] The original 5 members of the panel were Seth W. Richardson of Washington, D.C., the Board's Chairman,[4] along with Peter Campbell Brown of New York, Charles M. LaFollette of Indiana, David J. Coddaire of Massachusetts, and Dr. Kathryn McHale of Indiana.

However, the 1965 U.S. Supreme Court Albertson v. Subversive Activities Control Board case eliminated the SACB's authority to enforce Communist registration requirements.