CCC'25 will be held from August 5-8, 2025 in Toronto, Canada. The conference will happen at the Fields Institute at the University of Toronto. The University of Toronto is located in the heart of Toronto. It is easily accessible by public transport, and the city is very walking friendly. The exact location of the Fields Institute can be found at this link.

CCC'25 features a program of 37 talks, including 1 invited talk, spread over four days. There will be no tutorial day.

A detailed program is available here. Lunch will be provided on Day 2 and Day 3 of the conference. For the other days there are a number of great dining options in close proximity. A list of hand picked recommendations from the local graduate students will be available at the conference.

Registration is now open at this link. The registration fees are:  

Registration Fees (USD)
	Early (until July 15)	Late (July 16 or later)
Student	$150	$180
Non-student	$260	$300

The registration information is used by the conference organizers to facilitate communication of registration confirmation and conference details, and for planning and running the event. Name, email address, status, and affiliation are shared with the executive committee of the Computational Complexity Foundation (CCF). Name and email address are used to determine the electorate for the CCF Board elections and for generating the ballots. Status and affiliation are used for statistics about conference attendance. Individual records are kept for no more than four years. Statistical data are kept indefinitely.

Hotel recommendations can be found here.

Students may apply for travel allowances. Please see the application form for more details, and submit your application by the stated deadline for full consideration.

If you need a visa to enter Canada, please get in touch with the local arrangements chair to get a letter to obtain your visa.

There are two convenient airports in Toronto: the large Toronto Pearson Airport (YYZ) and the small Billy Bishop Toronto City Airport (YTZ). The small airport has flights to several nearby cities in the US and Canada, and is extremely convenient if flying to that is an option.

If you would like to receive announcements about future activities and events in complexity, you can subscribe to these mailing lists:

• Join CCF announcement list - This list is maintained by the President and Secretary of CCF. Mailing list members remain on the list until they request to be removed or their email address no longer works. The mailing list receives no more than a handful of messages per year, which are all announcements regarding CCC or CCF.

The open exchange of ideas and the freedom of thought and expression are central to the aims and goals of CCC. These require an environment that recognizes the inherent worth of every person and group, that fosters dignity, understanding, and mutual respect, and that embraces diversity. The CCC'25 organizers are committed to providing an environment that is free of discrimination and harassment, and expect all participants to honor that commitment.

CCC 2025 is a participant in the SafeTOC initiative.

• Swastik Kopparty (Chair), University of Toronto
• Ben Rossman, Duke University

Please email the local arrangements team.