28th Foundational Methods in Computer Science Workshop June 9-12, 2020, University Of Ottawa Foundational Methods in Computer Science is an annual workshop that brings together researchers in theoretical computer science and category theory. Past workshops have enjoyed talks in areas such as categorical quantum mechanics, restriction categories, database design, and the differential and resource logics. We will host tutorials and talks in several of these and related areas. We anticipate having talks and tutorials for the entire day on June 9,10 and 11, with the possibility of additional talks on the morning of the 12th, depending on how many talks are volunteered. The conference website is at http://aix1.uottawa.ca/~rblute/FMCS2020. This year, FMCS will immediately follow the 2020 Canadian Mathematical Society Summer Meeting, also held in Ottawa. We suggest attendees check out the schedule for that conference as there are a number of sessions of interest to category theorists. Support for graduate students: We particularly encourage graduate students to attend FMCS and to present their work. Some limited funding is available to support graduate students who wish to attend FMCS. To obtain the discounted registration and to apply for this funding you should contact one of the local organizers. Talks: Anyone interested in giving a talk or tutorial should contact the local organizers, no later than May 15th. But earlier is better. Housing: We were unable to reserve housing in the campus dorms, but there will likely be some individual rooms available. We will be listing hotels on the conference website shortly. It is recommended not to wait until the last minute to book accommodations. Registration: There will be a small registration fee. It will help to cover refreshments and subsidize students. Local Organizers: Rick Blute (rblute at uottawa dot ca) Pieter Hofstra (phofstra at uottawa dot ca) Phil Scott (philip dot scott at uottawa dot ca) [For admin and other information see: http://www.mta.ca/~cat-dist/ ]