ALGO 2005 - Including ESA, WABI, WAOA and ATMOS. Eivissa, Balearic Islands, Spain; 3--7 October, 2005. - http://www.lsi.upc.edu/~algo05/
WAOA 2005 - Third Workshop on Approximation and Online Algorithms: part of ALGO 2005. Hotel Torre del Mar, Ibiza, Spain; 6--7 October 2005. - http://www.cs.le.ac.uk/~te17/WAOA2005/
ACID 2005 - Algorithms and Complexity in Durham 2005. University of Durham, UK; 8--10 July 2005. - http://www.dur.ac.uk/acid.2005/
The Prague Stringology Club Conference - An annual conference on stringology and related areas. Next edition: Prague, Czech Republic; 29--31 August 2005. - http://cs.felk.cvut.cz/psc/event/
Joe Mitchell's Event List - A comprehensive list of sites of interest in computational geometry, algorithms, graphics, visualization, and related topics. - http://www.ams.sunysb.edu/~jsbm/events.html
SIGACT Theory Calendar - A list of conferences in Algorithms and Computation Theory maintained by Sriram V. Pemmaraju. Available in HTML, PS, PDF. - http://www.cs.uiowa.edu/theoryc/
Logic and Algorithms - Research session at the Isaac Newton Institute for Mathematical Sciences, Cambridge, UK; 16 January -- 7 July 2006. - http://www.newton.cam.ac.uk/programmes/LAA/
Workshop on Algorithms And Data Structures - Held in odd-numbered years, alternately with the Scandinavian Workshop of Algorithm Theory. Next meeting: Waterloo, Canada; 15--17 August 2005. - http://www.wads.org/