Hannah Barstow (b. 1994) is a pianist, vocalist and composer based in Toronto. As a performer, she is firmly rooted in the tradition of jazz, and is strongly influenced by the classic trios and quartets of Shirley Horn, Ahmad Jamal and Blossom Dearie. As a composer, her jazz, Bossa Nova, classical and pop influences come through. She composes and arranges tunes for a range of ensemble sizes from trios to women's choirs and big bands.

Hannah has performed with a number of renowned Canadian artists including Emilie Claire Barlow, Mike Murley, Steve Wallace, Pat Collins, the Brian Barlow Big Band, the Greg Runions Big Band with the Kingston Symphony, and was featured as a guest arranger and performer with the Kingston women's choir She Sings. She was featured as the Rising Young Star at the Prince Edward County Jazz Festival (2016), and she has performed in a short tour of Chile, with Mike Murley (2018).

Hannah has an ARCT in piano performance (Royal Conservatory of Music), a Bachelor of Music in Jazz Performance on piano from the University of Toronto (U of T) and a Master’s Degree in Jazz Performance on piano from U of T. Hannah has received a number of awards through U of T, including the Albert and Wilhelmine Francis Renewable Scholarship in Music (2012-2016), the U of T Jazz Arranging Prize (2015), the Oscar Peterson Grant for Jazz Performance as part of the Hnatyshyn Foundation Developing Artists Grant program (2015), the Suba Institute Award for Performance Excellence (2016), the Ken Dean Memorial Fellowship (2018-2020), and the U of T Graduating Award (2020). She has studied with some of Toronto’s leading musicians, including Mike Murley, Dave Restivo, Christine Duncan, Mark Eisenman, Terry Promane, Chris Donnelly, Alex Samaras, Noam Lemish, and Kingston-based composer Martha Hill-Duncan.

Hannah is an instructor at the University of Toronto Jazz Studies program and Humber Community Music School. She has released three EPs, the first as a leader on Hannah Barstow Trio (2017), and the later two as co-leader with vocalist Kalya Ramu, called Christmas for Two and Snow. Her first full length album, Beneath was released in 2021.