Watson met and started dating fellow Oxford student Will Adamowicz in 2011, during her first year at the university.[112] He accompanied her to the 2013 MTV Movie Awards, where she was given the Trailblazer Award.[113] The couple split up in early 2014.[114] Later in 2014, Watson began dating Oxford rugby player Matthew Janney.[115] The relationship ended in November; a spokesman for Watson said the split was due to her "unrelenting work schedule".[116]
While working on the film Noah, Watson was questioned about her faith, and she described herself as a spiritual Universalist.[117]