Gadd identifies as homosexualbisexual, and has had both same-sex and different-sex relationships.<ref>{{Cite news|title=Richard Gadd on Netflix's Baby Reindeer and his real-life story of stalking and trauma: 'I've lived in a prison of self-hate'|url=https://www.independent.co.uk/arts-entertainment/tv/features/richard-gadd-baby-reindeer-interview-netflix-stalking-b2526548.html|work=[[The Independent]]|last=Chilton |first=Louis|date=11 April 2024|access-date=22 May 2024}}</ref><ref>{{Cite magazine|title=The Cast of 'Baby Reindeer' Speaks Out: "You Have to Practice Self-Preservation"|url=https://www.vanityfair.com/hollywood/story/baby-reindeer-cast-exclusive-postmortem-awards-insider |magazine=[[Vanity Fair (magazine)|Vanity Fair]]|last=Canfield|first=David|date=15 May 2024|access-date=22 May 2024}}</ref> Gadd is an ambassador for We Are Survivors, a UK charity dedicated to helping male victims of [[sexual abuse]].<ref>{{Cite web|title=Our Ambassadors|url=https://www.wearesurvivors.org.uk/about-us/our-ambassadors/|url-status=live|archive-url=https://web.archive.org/web/20240402190914/https://www.wearesurvivors.org.uk/about-us/our-ambassadors/|publisher=We Are Survivors|archive-date=2 April 2024|access-date=16 April 2024}}</ref>
Gadd has struggled with alcohol, and substance abuse, telling ''The Guardian'' in 2015 "I'm healthy and sober now. I still get real bad downers. But I feel better than I was."<ref name="Guardian 2015"/>
