The IUPAC Global Women's Breakfast (#GWB2023) is held in conjunction with the UN Day of Women and Girls in Science. The theme is "Breaking Barriers in Science", as the aim is to build an active network to tackle the challenges of overcoming barriers to gender equality in science. Achievements of women in science should be appreciated and younger generations should be inspired to pursue a career in science. For this, all interested people from universities, companies, government and non-governmental organisations are welcome to exchange ideas.