Ronald Alan Klain (born August 8, 1961)[1] is an American attorney, political consultant, and former lobbyist who served as White House chief of staff under President Joe Biden from 2021 to 2023.

[5][6] During his tenure as chief of staff, Klain was often characterized as a key ally of the progressive wing of the Democratic Party within the White House.

[7][8][9] In January 2023, Klain announced his plans to step down as chief of staff in the weeks after Biden's State of the Union address in February.

In the White House, Klain was Associate Counsel to the President, directing judicial selection efforts and leading the team that won confirmation of Supreme Court Justice Ruth Bader Ginsburg.

In 2005, Klain left his partnership at O'Melveny & Myers to become executive vice president and general counsel of Revolution LLC, a technology venture capital firm launched by AOL co-founder Steve Case.

[2] At the time of his October 2014 appointment as Ebola response coordinator, he was general counsel at Revolution LLC and President of Case Holdings.

"[38][39][40] Although Klain, according to Julie Hirschfeld Davis writing in The New York Times, had "no record or expertise in Ebola specifically or public health in general,"[39] the choice was praised by Ezra Klein for his bureaucratic experience with coordinating agencies.

[43] He also served as chairman, public advocate and private advisor for Higher Grounds Labs, which describes itself as supporting "start-ups building products that help progressives win.

[51][52] Klain has received praise for his organizational abilities and for his responsiveness while serving as President Biden's chief of staff, while drawing criticism for being overly concerned with élite opinion, as reflected by his active Twitter presence, and for being too aligned with his party's left bloc.

Klain resigned on a high note for the Biden Administration following an unexpectedly strong showing in the 2022 midterm elections and signs of easing inflation.

[57][58] Klain returned to legal services firm, O'Melveny & Myers LLP as a partner, on April 18, 2023, to lead its Strategic Counseling and Crisis Management Practice.

[60] During the run-up to the 2024 presidential election, Klain publicly warned the Biden re-election campaign to refocus on immediate economic problems affecting American voters such as inflation rather than long-term projects such as infrastructure investments.

[61] Klain is married to Monica Medina, an attorney, consultant, and co-founder of Our Daily Planet, an environmental news platform.

He received a salary of almost $2 million in 2020 from the venture capital firm Revolution LLC, where he served as general counsel and executive vice president.