È riconosciuta come un'icona della musica celtica, per avere eseguito brani tradizionali come, tra gli altri, Blacksmith e She Moved Through The Fair. Ha venduto nel corso della sua carriera più di 14 milioni di copie.
Studio Album1985 - Elemental (Remastered 2012)
1987 - To Drive the Cold Winter Away (Remastered 2012)
1989 - Parallel Dreams (Remastered 2012)
1991 - The Visit (Remastered 2014)
1994 - The Mask and Mirror (Remastered 2012)
1997 - The Book of Secrets
2006 - An Ancient Muse
2008 - A Midwinter Night's Dream
2010 - The Wind That Shakes the Barley
2018 - In Her Own Words: Lost Souls (In Her Own Words)
2018 - Lost Souls
2021 - The Visit: The Definitive Edition (30th Anniversary 1991-2021)
2024 - In Her Own Words: The Road Back Home
Live Album
1998 Live in Paris and Toronto
2006 Nights from the Alhambra (Live)
2019 Live at the Royal Albert Hall
2022 Under a Winter's Moon
2024 The Road Back Home
Raccolte
2012 - A Mummers' Dance Through Ireland
2014 - The Journey so Far - The Best of Loreena McKennitt (Deluxe Edition)
EP
1995 - A Winter Garden - Five Songs for the Season
1995 - Live in San Francisco at the Palace of Fine Arts
2014 - A Moveable Musical Feast
Singoli
1997 - The Highway Man
2017 - Breaking of the Sword (Single)
2018 - A Hundred Wishes
2018 - Breaking of the Sword
2018 - Spanish Guitars and Night Plazas
2018 - Sun, Moon and Stars
2019 - Lost Souls - Single (Live at the Royal Albert Hall)
2019 - Spanish Guitars and Night Plazas (Live at the Royal Albert Hall)
2021 - Bonny Portmore (Live Trio - October 28, 2016 Gaillard Centre)
2021 - Courtyard Lullaby (Live - 1992 Wxpn's World Cafe 1992, Solo)
2021 - The Lady of Shalott (Live Trio - October 28, 2016 Gaillard Centre)
2022 - Huron Carol (Edit)
2024 - Sí Bheag, Sí Mhór / Wild Mountain Thyme (Live in Goderich, Ontario / 2023)
Partecipazioni
2009 - Marrakesh Night Market (V-Sag Remix)