A two day international colloquium to honor the retirement of Ruud Pellikaan and, in particular, his fundamental contribution to coding theory, cryptography and algebraic curves. The conference will cover a wide range of themes on the most recent developments in those topics and its applications. The journal Designs, Codes and Cryptography will devote a Special Issue in honor of Ruud Pellikaan. Authors of accepted abstracts in the conference will be invited to submit but the issue is open to anyone wishing to contribute. All contributions will be thoroughly refereed.