Maja Trochimczyk (born Maria Anna Trochimczyk; 30 December 1957 in Warsaw, Poland, other name: Maria Anna Harley) is a Californian music historian, writer and poet of Polish descent. She published six poetry books: Rose Always – A Love Story, 2017; Miriam's Iris, or Angels in the Garden, 2008; Slicing the Bread: Children's Survival Manual in 25 Poems (Finishing Line Press, 2014); Into Light: Poems and Incantations; The Rainy Bread - Poems from Exile,, 2016; an anthology Chopin with Cherries, 2010), and a multi-faith anthology Meditations on Divine Names.

Her poems and photographs appear in numerous journals and anthologies, including: Clockwise Cat,", "Ekphrasis, Epiphany Magazine,", the Lily Review, Loch Raven Review, Magnapoets, Quill and Parchment, Phantom Seed, poeticdiversity, Sage Trail, San Gabriel Valley Poetry Quarterly, The Original Van Gogh's Ear Anthology, Poetry Super Highway, The Scream Online, The Houston Literary Review, and other venues. She may be heard discussing her poetry on KPFK's Poets' Cafe, interviewed by Lois P. Jones in 2011. Video recordings of Trochimczyk's poetry are found on YouTube channel of Moonrise Press and Poetry LA.

As a music historian, she published six books of music studies and essays: After Chopin: Essays in Polish Music (USC, 2000); The Music of Louis Andriessen (Routledge, 2002) including interviews with the composer and analyses of his music; Polish Dance in California (Columbia UP, East European Monographs, 2007); A Romantic Century in Polish Music,; Frédéric Chopin: A Research and Information Guide. Co-edited with William Smialek in the series Routledge Music Bibliographies (New York: Routledge, 2015). and Lutoslawski: Music and Legacy a collection of essays about Witold Lutoslawski, co-edited with Stanislaw Latek and published jointly by Polish Institute of Arts and Sciences in Canada (Montreal) and the Polska Akademia Umiejetnosci (Krakow, Poland) in 2014., ISBN 978-0-986-88514-3