The Tony Award for Best Featured Actress in a Play is an honor presented at the Tony Awards, a ceremony established in 1947 as the Antoinette Perry Awards for Excellence in Theatre, to actresses for quality supporting roles in a Broadway play. The awards are named after Antoinette Perry, an American actress who died in 1946. Honors in several categories are presented at the ceremony annually by the Tony Award Productions, a joint venture of The Broadway League and the American Theatre Wing, to "honor the best performances and stage productions of the previous year."

Jo Van Fleet was an American stage, film, and television actress. During her long career, which spanned over four decades, she often played characters much older than her actual age. Van Fleet won a Tony Award in 1954 for her performance in the Broadway production The Trip to Bountiful, and the next year she won an Academy Award for Best Supporting Actress for her supporting role in East of Eden.