Ailish Brennan is the Medical Lead for the Harm Reduction International Conference 2025 (HR25).

Ailish is a harm reductionist and drug policy advocate who has been working in the field for 5 years, specialising in youth advocacy, feminist issues in drug policy, and the intersection between drug use and trans and queer identities. Her community, both the trans and drug using communities, remain the most important thing to her and she aims to improve the health and material outcomes of these communities through her work, in whatever way is necessary.

Ailish is a published author, having contributed a chapter to the book Shifting the Needle: The Impact of Global Drug Policy on Women, where she discusses the impact of prohibition on queer women and gender non-conforming people.

Ailish holds a bachelor’s degree in Politics, International Relations, and Economics from University College Dublin.