Introduction An annual award, called the *Alonzo Church Award for Outstanding Contributions to Logic and Computation*, was established in 2015 by the ACM Special Interest Group for Logic and Computation (SIGLOG), the European Association for Theoretical Computer Science (EATCS), the European Association for Computer Science Logic (EACSL), and the Kurt Gödel Society (KGS). The award is for an outstanding contribution represented by a paper or by a small group of papers published within the past 25 years. This time span allows the lasting impact and depth of the contribution to have been established. The award can be given to an individual, or to a group of individuals who have collaborated on the research. For the rules governing this award, see: http://siglog.hosting.acm.org/the-alonzo-church-award-for-outstanding-contri... The 2016 Alonzo Church Award was given to Rajeev Alur and David Dill for their invention of timed automata, see: http://eacsl.kahle.ch/church16.pdf Eligibility and Nominations The contribution must have appeared in a paper or papers published within the past 25 years. Thus, for the 2017 award, the cut-off date is January 1, 1992. When a paper has appeared in a conference and then in a journal, the date of the journal publication will determine the cut-off date. In addition, the contribution must not yet have received recognition via a major award, such as the Turing Award, the Kanellakis Award, or the Gödel Prize. (The nominee(s) may have received such awards for other contributions.) While the contribution can consist of conference or journal papers, journal papers will be given a preference. Nominations for the 2017 award are now being solicited. The nominating letter must summarise the contribution and make the case that it is fundamental and outstanding. The nominating letter can have multiple co-signers. Self-nominations are excluded. Nominations must include: a proposed citation (up to 25 words); a succinct (100-250 words) description of the contribution; and a detailed statement (not exceeding four pages) to justify the nomination. Nominations may also be accompanied by supporting letters and other evidence of worthiness. Nominations are due by *March 1, 2017*, and should be submitted to gdp@inf.ed.ac.uk. Presentation of the Award The 2017 award will be presented at the CSL conference, the annual meeting of the European Association for Computer Science Logic. The award will be accompanied by an invited lecture by the award winner, or by one of the award winners. The awardee(s) will receive a certificate and a cash prize of USD 2,000. If there are multiple awardees, this amount will be shared. Award Committee The 2017 Alonzo Church Award Committee consists of the following four members: Natarajan Shankar, Catuscia Palamidessi, Gordon Plotkin (chair), and Moshe Vardi. [For admin and other information see: http://www.mta.ca/~cat-dist/ ]