Southampton Science and Engineering Festival (SOTSEF) is the University of Southampton's annual festival that allows everyone to explore and discover what the world of science and engineering has to offer.

SOTSEF began in 2002 as a one-day free event, the Science and Engineering Day, at Highfield Campus, where around 200 people attended.

Every successive year it has grown bigger and better, winning best Engineering Event in 2009 and best STEM (Science, Technology, Engineering and Maths) Institution Event in 2014 awarded by the British Science Association. In 2015, SOTSEF was officially launched, moving away from a one-day event to a larger programme, which originally included Ocean and Earth Day at the National Oceanographic Centre (NOCs).

The Festival has continued to expand with new activities and many returning favourites at local venues as well as Highfield Campus and Boldrewood Innovation Campus (including Lloyds Register). Thousands of people now attend SOTSEF each year, in particular Science and Engineering Day, coming as far as Dorset, Kent and Greater Manchester.

SOTSEF is part of the UK Science Festival Network and currently runs every year in parallel with British Science Week, a 10-day programme of thousands of events running throughout the whole of the UK, with the aim of celebrating science, engineering, technology and maths. The Festival has continued to expand with new activities and many returning favourites at local venues, as well as Highfield Campus and Boldrewood Innovation Campus (including Lloyds Register). Thousands of people now attend SOTSEF each year, in particular Science and Engineering Day, coming from as far as Dorset, Kent and Greater Manchester.

These days the Festival is organised by a small dedicated Festival team - part of the Public Engagement with Research unit (PERu) at the University of Southampton - who cures all sides of the event from planning to evaluation, and takes pride in delivering the best possible experience to everyone involved, from volunteers to visitors.

Alongside SOTSEF, the Festival team organises the newer Human Worlds Festival, a week of events to celebrate the worlds of arts and humanities running in parallel with Being Human festival - and other opportunities which bring researchers, schools, trusts, associations, local community groups and members of the public together.