Aggregator for CS theory workshops, schools, and so on
February 27, 2026
EnCORE, UC San Diego
https://cseweb.ucsd.edu/~slovett/workshops/socal-theory-day-2026/
After a long hiatus, the South California Theory Day is returning! This is an informal meeting for SoCal TCS researchers to meet and learn from each other. There will be a few long talks by senior researchers, and several shorter talks by students and postdocs. Attendance is free, but registration is required. For students/postdocs – please sign up to give a short talk.
December 11-12, 2025
Oxford, UK
https://qcow.cs.ox.ac.uk/
Submission deadline: December 10, 2025
Registration deadline: December 10, 2025
The first Quantum Cambridge-Oxford-Warwick Colloquium (QCOW), taking place 11–12 December 2025 at the University of Oxford. This inaugural meeting focuses on Quantum Low-Depth Complexity. The programme features talks, tutorials, and opportunities for open discussion.
The inaugural CCC Test of Time Award recognizes a paper published in CCC that had a significant and long-term impact on the field of computational complexity. Eligible papers are those that appeared in CCC (or Structures, for pre-1996 papers), at least 10 years ago. That is, from CCC 2016 or earlier.
We invite the community to nominate papers. The nomination deadline is March 2, 2026.
https://computationalcomplexity.org/tot/tot26.html
August 24 – December 18, 2026
Simons Institute, Berkeley CA
https://simons.berkeley.edu/programs/pseudorandomness-high-dimensional-expansion
Submission deadline: November 15, 2025
We are organizing a semester program on Pseudorandomness and High-Dimensional Expansion at the Simons Institute in Fall 2026 (in parallel with a program on Spectral Theory Beyond Graphs). Junior researchers (PhD after Summer 2021) can apply for a Simons Institute Research Fellowship (deadline Nov 15). We are nearly at capacity for long-term visitors, but there is an opportunity for interested researchers to apply for a small number of remaining slots allocated by the institute (deadline Nov 15).
Irit Dinur, Prahladh Harsha, Avishay Tal, Salil Vadhan, David Zuckerman
December 18-19, 2025
Sydney, Australia
https://sites.google.com/view/tao25workshop/home
Registration deadline: December 1, 2025
This is a free 2-day workshop, right after FOCS 2025, to discuss recent advances in approximation and online algorithms for network design and related areas. This is the 10th iteration of the Flexible Network Design workshop series. The workshop will have a mix of talks—including plenary talks by MohammadTaghi Hajiaghayi on beating 2-approximation for Steiner forest, and Jarek Byrka on recent advances on bidirected cut relaxations—as well as a Wiki Edit-a-thon and an Open Problem Session.
Students, faculty, and researchers of all seniority levels are welcome.
January 25-30, 2026
Zinal, Switzerland
https://theory.epfl.ch/WinterSchool2026/
Submission deadline: October 24, 2025
The Swiss Winter School on Theoretical Computer Science is the fourth in a series of annual winter schools in Theoretical Computer Science jointly organized by EPFL and ETH Zurich. The goal of the school is to educate top international theory PhD students about exciting recent developments in the field.
This year’s speakers: Ankur Moitra (MIT), Avishay Tal (UC Berkeley), Vera Traub (ETH Zürich).
October 10, 2025
Copenhagen, Denmark
https://barc.ku.dk/wave-conference/
Registration deadline: October 2, 2025
The WAVE (Women in Algorithms, Venture into Exploration) workshop will be held at the University of Copenhagen on October 10th, 2025. The event features technical talks and personal reflections in Theoretical Computer Science (TCS), presented by outstanding female researchers, as a way to celebrate the 150th anniversary of women’s access to the University of Copenhagen. The event will also include a panel discussion on current challenges in TCS, with a special emphasis on the difficulties faced by early-career female researchers and diversity issues. International attendees are warmly welcomed. Participants of all genders are encouraged to attend, as all topics discussed are relevant to everyone in the field.
October 10-12, 2025
Pittsburgh, PA
https://sites.google.com/andrew.cmu.edu/acorn-2025/home
Carnegie Mellon University will be hosting the 2025 ACORN (Algorithms, Combinatorics, and Optimization Research Network) Workshop, October 10-12, 2025. Registration is now open at the website here: https://sites.google.com/andrew.cmu.edu/acorn-2025/home
ACORN (Algorithms, Combinatorics, and Optimization Research Network) is a group of institutions, departments, and researchers committed to the principle that the fields of combinatorics, optimization, and algorithms share core ideas and methods and that their different perspectives bring new ideas, questions, and techniques to the other fields. Following in the footsteps of previous “Watermellon” workshops organized by CMU and Waterloo, the first ACORN meeting was jointly organized by the three schools with joint ACO PhD programs (Georgia Tech, CMU, and Waterloo) and was held at Georgia Tech in March 2023. See https://sites.gatech.edu/acorn/
October 11-12, 2025
Rochester, NY
https://www.cs.rochester.edu/u/shossei2/eagl2025website/index.html
Registration deadline: September 20, 2025
The purpose of this annual workshop is to bring together researchers in theoretical computer science, who work in the vicinity of the eastern great lakes region. For 2025, this event is held at the University of Rochester, NY, USA.
December 11-13, 2025
University of Sydney, Australia
https://sites.google.com/view/celebration-tcs-2025/
Registration deadline: December 1, 2025
This (free) mentoring and research event will take place at the University of Sydney, just before FOCS 2025, to celebrate the richness and collegiality of the Theoretical Computer Science community. This event, co-organized with TCS For All, will feature a mix of inspirational and rising star talks, a poster session, and plenty of time for discussions and socializing with other members of the TCS community.
Students, faculty, and researchers of all seniority levels are welcome. Applications for travel support (accommodation) are due by September 19.
CS Theory Events 