While some elements of Cat on a Hot Tin Roof could be considered feminist in interest, the play itself isn't very interested in feminist concerns, which deal with the problems of women in a male-dominated society. Though Maggie's place in the family is a troubled one, she is not the protagonist of the play. Her estranged husband Brick is the central figure, squaring off against his father Big Daddy.

As the other answer mentions, the play is more interested in the oppressed position of gay people in a society where any deviation from heterosexuality is punished. Brick was in love with his friend Skipper, who committed suicide and he is still traumatized by the event. Even though he's married to Maggie, he has no sexual interest in her. His identity as a "straight" man is only a performance for the benefit of his social place and he is so depressed that he is losing interest in even trying to put up with the charade.

The few feminist themes there are come in with how Maggie's place in the family is dependent upon her ability to get pregnant. She is contrasted with the fertile Mae, who has several children with the intent purpose of securing inheritance from Big Daddy. However, these themes are subordinate to the gay themes.