ACAC '26
21st Athens Colloquium on Algorithms and Complexity
August 25-26, 2026
National Technical University of Athens
Scope
ACAC is an annual meeting in Athens aiming to bring together researchers working in all areas of the theory of algorithms and computational complexity. It serves as a lively forum for presenting research results that are in a preliminary stage or have been recently accepted / presented in some major conference. Contributions may appear, fully or partially, in informal electronic proceedings available only to the participants (subject to authors' approval). The language of the workshop is English.Registration - Contributions
There are no registration fees. However, participants should register for administrative purposes, by filling the registration form until August 20.Participants interested in giving a presentation should register, providing a tentative title and a short abstract, by using the above registration August 10. The organizers will make every possible effort, subject to scheduling constraints, so that all interested participants present their work at the workshop.
Topics of interest
Include, but are not limited to:- Analysis of Algorithms
- Randomized and Approximation Algorithms
- Computational Complexity
- Data Structures
- Cryptography
- Graph Theory
- Algorithmic Game Theory
- Computational Geometry
- Combinatorial Optimization
- Algorithmic Algebra and Coding Theory
- Theoretical Aspects of Databases
- Computational Biology
- Quantum Computing
- Parallel and Distributed Computing
- Computational Learning Theory
- Applications of Logic
Sponsors
Organization of ACAC 2026 is supported by the
School of Electrical and Computer Engineering,
the Archimedes Research Unit of the
Athena Research Center, and the
Institute of Communication and Computer Systems of the
National Technical University of Athens.
News
- Important Dates
- Registration Deadline: August 20
- Submission Deadline: August 10
Keynote Talks
- Evangelos Chatziafratis, UC Santa Cruz
- George Christodoulou, Aristotle University of Thessaloniki
- Antonis Papavassiliou, National Technical University of Athens
- Evaggelia Pitoura, University of Ioannina
Contributed Talks
- Dimitrios Diochnos
- Giannis Fikioris
- Agelos Georgakopoulos
- Alexandra Gypari
- Sotiris Kanellopoulos
- Andreas Kontogiannis
- Thanasis Lianeas
- Giorgos Mitropoulos
- Anna Mpanti
- Andreas Panayi
- Panagiotis Patsilinakos
- Christos Pergaminelis
- Nicos Protopapas
- Ioannis Sigalas
- Thanos Tolias
- Giorgos Tsimos
- Dimitrios Tsintsilidas
- Manolis Vasilakis
- Ioannis Vlachos
Organizing Committee
- Dimitris Fotakis
- Nikos Leonardos
- Evangelos Markakis
- Aris Pagourtzis
- Alkmini Sgouritsa
- Stathis Zachos
- Vassilis Zissimopoulos
Administration
- Ioanna Protekdikou
Local Arrangements
- Antonis Antonopoulos
- Pourandokht Behrouz
- Alexandra Gypari
- Sotiris Kanellopoulos
- Christos Pergaminelis
- Thanos Tolias