Jennifer Mulhern Granholm (born February 5, 1959) is a Canadian-born American politician who was the 16th United States Secretary of Energy from 2021 to 2025. A member of the Democratic Party, she previously served as the 47th Governor of Michigan from 2003 to 2011 and as the 51st Attorney General of Michigan from 1999 to 2003, the first woman to hold either office.

Born in Vancouver, British Columbia, Canada, Granholm moved to California at age four. She obtained a Bachelor of Arts degree from the University of California, Berkeley, in 1984 and a Juris Doctor degree from Harvard Law School in 1987. She then clerked for Judge Damon Keith of the United States Court of Appeals for the Sixth Circuit, became an assistant U.S. attorney for the Eastern District of Michigan in 1991, and was appointed to the Wayne County Corporation Counsel in 1995.

In 1998, Granholm ran for attorney general of Michigan, defeating Republican nominee John Smietanka. She ran for governor of Michigan in 2002 and was elected the state's first female governor. She was re-elected in 2006.

Granholm was a member of the presidential transition team for Barack Obama before he assumed office in 2009. After leaving public office, Granholm took a position at the UC Berkeley and, with her husband Daniel Mulhern, wrote A Governor's Story: The Fight for Jobs and America's Future, released in 2011. She became host of The War Room with Jennifer Granholm. In 2017, she was hired as a CNN political contributor.

After President-elect Joe Biden announced his intention to nominate Granholm to head the United States Department of Energy in 2020, she was confirmed by the U.S. Senate in 2021. After serving a full term as secretary, she joined DGA Group.

Granholm was born February 5, 1959, in Vancouver, British Columbia, to Shirley Alfreda (née Dowden) and Victor Ivar Granholm, both bank tellers. Granholm's maternal grandparents came from Ireland and Newfoundland, respectively. Her paternal grandfather was Hugo "Anders" Granholm, who immigrated to Penny, British Columbia, Canada, in the late 1920s from Robertsfors, Sweden, where his father was the mayor. The former Minister for Enterprise and Energy and former Deputy Prime Minister of Sweden, Maud Olofsson, lives in Robertsfors, and when the two met in Sweden, the media revealed that Olofsson's husband is a relative of Granholm. Her paternal grandmother was Judith Olivia Henriette (Solstad) Granholm, an emigrant from Gjerstad in Southern Norway. She came with the ship SS Bergensfjord from Oslo to Halifax, and from there she took the railway to Penny, British Columbia, where her uncles and several others had established a small logging village.

Granholm's family immigrated to California when she was four years old. She grew up in Anaheim, San Jose, and San Carlos. Granholm attended Ida Price Junior High and Del Mar High School before graduating from San Carlos High School in 1977 and won the Miss San Carlos beauty pageant. As a young adult, she attempted to launch a Hollywood acting career but abandoned her efforts at age 21. In 1978, she appeared on The Dating Game, and held jobs as a tour guide at Universal Studios and in customer service at the Los Angeles Times and was the first female tour guide at Marine World/Africa USA in Redwood City, piloting boats with 25 tourists aboard.

In 1980, at age 21, she became a naturalized U.S. citizen, and worked for John B. Anderson's campaign for president of the United States as an Independent in the 1980 election. She then enrolled at the University of California, Berkeley, the first person in her family to attend college. She was elected to Phi Beta Kappa and graduated in 1984 with a B.A. in political science and French. During a year in France, she helped to smuggle clothes and medical supplies to Jewish people in the Soviet Union and became involved in the anti-apartheid movement. She then earned a Juris Doctor degree at Harvard University, also with honors, in 1987. At Harvard Law School, Granholm served as editor-in-chief of the Harvard Civil Rights-Civil Liberties Law Review.