Kellie-Jay Keen-Minshull

Kellie-Jay Nyishie Keen-Minshull (née Keen; born June 1974), also known as Posie Parker, is a British anti-transgender and gender-critical activist. She is the leader of the political party Party of Women. She describes herself as a woman's rights activist, but says that she is "not a feminist". She is known for popularising the anti-trans slogan "adult human female".

Keen-Minshull is the founder of the group Standing for Women and the former special advisor to the Women's Liberation Front (WoLF). She has been described as a key figure opposing the United Kingdom's Gender Recognition Act 2004. She launched a failed bid to become the MP for the constituency of Bristol Central in the 2024 United Kingdom general election, coming in last place with only 0.5% of the vote.

She has used billboards, posters, stickers and social media to promote anti-transgender rights messages, and has held events in the United Kingdom, the United States, Australia, and New Zealand that have been protested against by supporters of transgender rights.