This article outlines United States-related events which occurred in the year 2021.

Though Donald Trump lost his bid to be re-elected President of the United States to former Vice President Joe Biden, Trump's attempts to overturn the 2020 United States presidential election have continued throughout the year, most violent on January 6, when supporters of Trump stormed the Capitol building and unsuccessfully halted the formal counting of electoral votes in Congress. Much of the year, as well as 2022 in the United States, involved the aftermath of the attack itself (which included Trump's second impeachment, a first for a US president) and criminal trials of those at the Capitol, most of which has been carried out by a special committee in the House of Representatives.

2021 in the United States

2021 was additionally defined by protests against COVID-19 lockdowns in response to the pandemic, as well as the beginning of a period of high inflation and ongoing protests mostly against police brutality. The year also saw an extremely active Atlantic hurricane season, a destructive California wildfire season, and a power crisis in Texas.

2021 in the United States

Incumbents

Federal government

President: Donald Trump (R–Florida) (until January 20), Joe Biden (D–Delaware) (since January 20) Vice President: Mike Pence (R-Indiana) (until January 20), Kamala Harris (D-California) (since January 20) Chief Justice: John Roberts (New York) Speaker of the House of Representatives: Nancy Pelosi (D-California) Senate Majority Leader: Mitch McConnell (R-Kentucky) (until January 20), Chuck Schumer (D-New York) (since January 20) Congress: 116th (until January 3), 117th (starting January 3)

2021 in the United States