The venerable Women’s National Republican Club is mired in drama after a top executive has been accused of proclaiming lesbians were not welcome as members.

The West 51st Street club, founded in 1921, has been engulfed in a battle after board member Irene Marmott allegedly said publicly of lesbians, “We don’t want them here.”

Marilyn Thomas emailed more than 1,000 other club members — who include Barbara Bush, Laura Bush and Nancy Reagan — saying she was mortified when, at a recent meeting, Marmott “made very negative and discriminatory comments about a prospective member . . . who had asked about whether or not lesbians are part of the WNRC.” Marmott is said to have exclaimed before Thomas and a friend on Jan. 12, “We obviously can’t say that but, of course, we don’t want them [lesbians] here.”

Thomas added in the email: “Irene went on to make matters worse by suggesting that I must be joking when I stated that the WNRC should open its doors to all women, including the gay community. Further, Irene scoffed at my point that Margaret Hoover, a good friend to our club and a recent guest speaker, is the head of GOProud, the gay and lesbian movement in the Republican Party. Irene said that she had no idea that Margaret was ‘wrapped up in something like that.’”

WNRC lawyer Daniel W. Isaacs said: “This club has been in existence for 90 years and welcomes people regardless of creed, color and sexual orientation. We have members who are gay.

“Miss Marmott denies making these statements . . . She has no recollection of saying anything that could be construed as inappropriate.” He said Thomas prevented him from looking into her claims by refusing to allow him to speak to her pal who heard Marmott’s alleged comments.

Thomas, who works in film, told Page Six: “I am not standing in the way of anything. They are accusing me of threatening and blackmailing the club, when all I want is for Irene to apologize and step down. Someone with such discriminatory beliefs does not belong in a leadership position.”