Rachel Anne Notley ECA (born April 17, 1964) is a Canadian lawyer and former politician who was the 17th premier of Alberta from 2015 to 2019 and leader of the Alberta New Democratic Party (NDP) from 2014 to 2024. Notley was the member of the Legislative Assembly (MLA) for Edmonton-Strathcona from 2008 to 2024.

The daughter of former Alberta NDP leader Grant Notley, she was a lawyer before entering politics; she focused on labour law, with a specialty in workers' compensation advocacy and workplace health and safety issues.

Notley was first elected to the Legislative Assembly in the 2008 provincial election, succeeding former NDP leader Raj Pannu. Six years later on October 18, 2014, Notley won the Alberta New Democratic Party leadership election on the first ballot with 70% of the vote and went on to lead the party to a majority victory in the 2015 provincial election, ending 44 years of rule by the Progressive Conservative Association of Alberta. In the 2019 provincial election, the NDP government was defeated by the United Conservative Party, making Notley the Opposition leader. In the 2023 provincial election, the NDP made large gains but failed to form government, with Notley continuing as Opposition leader.

On January 16, 2024, Notley announced her plans to step down as leader of the Alberta NDP, but she would remain leader until a successor was elected on June 22. On June 22, Notley was succeeded as leader of the Alberta NDP by Naheed Nenshi, and was succeeded as Leader of the Opposition by Christina Gray on June 24. On December 12, Notley announced her intention to resign as an MLA, effective December 30. She returned to practising labour law following her resignation.

"My parents taught me that an NDPer in Alberta has to work three times harder than any other politician to earn votes. It's a lesson I won't forget."

Notley was born on April 17, 1964, in Edmonton, Alberta, and was raised outside of the town of Fairview, Alberta, the daughter of Sandra Mary "Sandy" (Wilkinson) and Alberta NDP Leader and MLA Grant Notley. She is the first Alberta premier to be born in Edmonton. Notley is the sister of Paul Notley and Stephen Notley, author and illustrator of Bob the Angry Flower. Her mother, a devout Anglican, was born in Concord, Massachusetts, and moved to Alberta as an adult.

Notley was unafraid to challenge older political leaders as a college student, even asking her father at an Alberta NDP public meeting on poverty and student debt for his advice to a "poor student whose parents made too much money for her to get a loan while at the same time being too cheap to give her enough money to buy food."

Notley credits her mother Sandy with getting her involved in activism, taking Notley to an anti-war demonstration before she was even ten years old. She remained unsure about whether or not to enter public office until she was in her 30s. Alongside her own family background, Notley has also cited her high school social studies teacher Jim Clevette as having made a lasting impact when it comes to her interest in politics. She has also claimed Jack Layton as being a personal hero.