Alanis Nadine Morissette ( ə-LAN-iss MORR-iss-ET; born June 1, 1974) is a Canadian and American singer and songwriter. Known for her emotive mezzo-soprano voice and confessional songwriting, she became a cultural phenomenon during the mid 1990s and early 2000s. Morissette has sold more than 75 million records worldwide, making her one of the world's best-selling music artists. She is the recipient of numerous accolades, including a Brit Award, seven Grammy Awards, fourteen Juno Awards, and nominations for two Golden Globe Awards and a Tony Award.

Morissette began her music career in Canada in the early 1990s with two dance-pop albums: Alanis (1991) and Now Is the Time (1992). After relocating to Los Angeles, she released the alternative rock album Jagged Little Pill (1995), which became one of the best-selling albums of all time and has appeared on several all-time lists. She continued this success with her next album Supposed Former Infatuation Junkie (1998), which saw her adapt an experimental sound and was highly anticipated. She served as the sole producer of her fifth album Under Rug Swept (2002), and took on further creative control and production duties. She has continued her career with the subsequent albums So-Called Chaos (2004), Flavors of Entanglement (2008), Havoc and Bright Lights (2012), Such Pretty Forks in the Road (2020), and The Storm Before the Calm (2022).

Morissette holds the record for the most number ones on the weekly Billboard Alternative Songs chart among female soloists, group leaders, or duo members. Her first three internationally released studio albums topped the Billboard 200 albums chart, and her next four albums peaked within the top 20. Her singles "You Oughta Know", "Hand in My Pocket", "Ironic", "You Learn", "Head Over Feet", "Uninvited", "Thank U", and "Hands Clean", reached top 40 in major charts around the world. Rolling Stone deemed her the "queen of alt-rock angst", and VH1 ranked her the 53rd-greatest woman in rock and roll. In 2005, she was inducted into Canada's Walk of Fame.