Girl Geek Dinners is an informal organisation that promotes women in the information technology industry,^[1] with 64 established chapters in 23 countries.^[2] The organization was founded in London, United Kingdom, by Sarah Lamb (née Blow), who realized how under-represented women are at information technology events after attending a Geek Dinner in 2005.^[3]

Chapters organise local events featuring both female and male speakers with mostly female attendees. As the name suggests, it is like a Geek Dinner but with one significant rule: men can only attend as invited guests of women, ensuring that women will never be outnumbered by men at events.

A typical event is an informal dinner, followed by one or more presentations by featured speakers.