Katherine Deves, the Liberal candidate for Warringah — the seat of former Prime Minister Tony Abbot and currently held by independent Zali Steggall, was handpicked by Morrison and the federal executive.
"I'm very pleased to play a role in that," he said.
Deves is the co-founder of a campaign that aims to stop transgender women from competing in women's sports.
"I think she raised very important issues and I think Claire Chandler's also been outspoken and brave on these issues," Morrison added.
Claire Chandler is a Tasmanian senator who introduced a private member's bill to change the Sex Discrimination Act.
Under the change, sporting teams would be able to exclude a transgender woman from single-sex sports, a move that Morrison declared "terrific".
"I mean, Claire is a champion for women's sport, and I think she's been right to raise these issues in the way that she has. Well done Claire," he said.
The Prime Minister would not comment if the Liberal party would look to ban transgender women from women's sports should the party win the election on May 21.