TSCA Views 9 meanings found TSCA is best known as the U.S. Toxic Substances Control Act, but the acronym also appears in a variety of Texas‑based professional and community organizations. Miscellaneous Tibetan Spaniel Club of America Traditional Small Craft Association Community Texas Speech Communication Association Tyler Street Christian Academy Governmental Toxic Substances Control Act Toxic Substances Control Act of 1976 Toxic Substances Control Acts Academic & Science Tri-State College of Acupuncture, New York City Sports Texas Sporting Clays Association