The Awards and Deadlines page gives an overview of the scholarships and awards available around the academic year, from Fall through to Summer. It contains the same information as the poster in the hallway by the main office, but with live links to the relevant websites.
Like the poster, it is not 100% comprehensive: smaller awards are not included, and new awards are created regularly too (which may post-date this list). So please also keep an eye on your email for updates, and also use Student Financial Services’ excellent Graduate Awards Search Tool
To apply for Department-specific awards, use the following form: Graduate Scholarship Application Form 2017 (to be updated August 2018).