Simon Tait Keller (born 1973)[1] is a philosophy academic, and a full professor at Victoria University of Wellington in New Zealand.

[10] In 2015, Keller presented a talk on Patriotism in peace and war, as part of a series on conflict jointly organised by Victoria University of Wellington and the National Library of New Zealand.

He argued that the modern concept of a healthy mind as a positive construction, and something to strive towards, should be treated with suspicion because of the lack of clarity about what good mental health looks like.

[13] Keller was a Visiting Fellow at the Centre for Advanced Studies at Ludwig Maximilian University of Munich from November 2017 to January 2018 and again in October 2019.

[6] In 2022, Keller presented a talk at one of the new fellows seminars given by Royal Society Te Apārangi, entitled Mental health as an ethical concept.