United States President Bill Clinton is acquitted by the United States Senate in his impeachment trial.

The impeachment of Bill Clinton occurred when Bill Clinton, the 42nd president of the United States, was impeached by the United States House of Representatives of the 105th United States Congress on December 19, 1998 for "high crimes and misdemeanors". The House adopted two articles of impeachment against Clinton, with the specific charges against Clinton being lying under oath and obstruction of justice. Two other articles had been considered, but were rejected by House vote.

Clinton's impeachment came after a formal House inquiry, which had been launched on October 8, 1998. The charges for which Clinton was impeached stemmed from a sexual harassment lawsuit filed against Clinton by Paula Jones. During pre-trial discovery in the lawsuit, Clinton gave testimony denying that he had engaged in a sexual relationship with White House intern Monica Lewinsky. The catalyst for the president's impeachment was the Starr Report, a September 1998 report prepared by Ken Starr, Independent Counsel, for the House Judiciary Committee. Clinton was the second American president to be impeached, the first being Andrew Johnson, who was impeached in 1868.The approved articles of impeachment would be submitted to the United States Senate on January 7, 1999. A trial in the Senate then began, with Chief Justice William Rehnquist presiding. On February 12, Clinton was acquitted on both counts as neither received the necessary two-thirds majority vote of the senators present for conviction and removal from officein this instance 67. On Article One, 45 senators voted to convict while 55 voted for acquittal. On Article Two, 50 senators voted to convict while 50 voted for acquittal. Clinton remained in office for the remainder of his second term.

William Jefferson Clinton (né Blythe III; born August 19, 1946) is an American politician who served as the 42nd president of the United States from 1993 to 2001. He previously served as governor of Arkansas from 1979 to 1981 and again from 1983 to 1992, and as attorney general of Arkansas from 1977 to 1979. A member of the Democratic Party, Clinton became known as a New Democrat, as many of his policies reflected a centrist "Third Way" political philosophy. He is the husband of Hillary Clinton, who was a senator from New York from 2001 to 2009, secretary of state from 2009 to 2013 and the Democratic nominee for president in the 2016 presidential election.

Clinton was born and raised in Arkansas and attended Georgetown University. He received a Rhodes Scholarship to study at University College, Oxford, and he later graduated from Yale Law School. He met Hillary Rodham at Yale; they married in 1975. After graduating from law school, Clinton returned to Arkansas and won election as state attorney general, followed by two non-consecutive terms as Arkansas governor. As governor, he overhauled the state's education system and served as chairman of the National Governors Association. Clinton was elected president in the 1992 presidential election, defeating incumbent Republican president George H. W. Bush and independent businessman Ross Perot. At 46 years old, he became the third-youngest president of the United States.

Clinton presided over the longest period of peacetime economic expansion in American history. He signed into law the North American Free Trade Agreement (NAFTA) and the Violent Crime Control and Law Enforcement Act, but failed to pass his plan for national health care reform. In the 1994 elections, the Republican Party won unified control of Congress for the first time in 40 years, however, Clinton was reelected in the 1996 with a landslide victory. Starting in the mid 1990s, he began an ideological evolution as he became much more conservative in his domestic policy advocating for welfare reform and the State Children's Health Insurance Program, as well as financial deregulation measures. He also appointed Ruth Bader Ginsburg and Stephen Breyer to the U.S. Supreme Court. During the last three years of Clinton's presidency, the Congressional Budget Office reported a budget surplus—the first such surplus since 1969. In foreign policy, Clinton ordered U.S. military intervention in the Bosnian and Kosovo wars, signed the Dayton Peace agreement. He also called for the expansion of NATO in Eastern Europe and many former Warsaw Pact members joined NATO during his presidency. Clinton's foreign policy in the Middle East saw him sign the Iraq Liberation Act which gave aid to groups against Saddam Hussein. He also participated in the Oslo I Accord and Camp David Summit to advance the Israeli–Palestinian peace process, and assisted the Northern Ireland peace process.

Clinton's second term would be dominated by the Monica Lewinsky scandal which began in 1996, when he began a sexual affair with 22-year-old White House intern Monica Lewinsky. In January 1998, news of the sexual relationship made tabloid headlines. The scandal escalated throughout the year, culminating on December 19 when Clinton was impeached by the House of Representatives, becoming the second U.S. president to be impeached after Andrew Johnson. The two impeachment articles that the House passed were centered around Clinton using the powers of the presidency to obstruct the investigation and that he lied under oath. In 1999 Clinton's impeachment trial begin in the Senate. Clinton was acquitted on both charges as the Senate failed to cast 67 votes against him, the conviction threshold.

Clinton left office in 2001 with the highest end-of-term approval rating of any U.S. president since Franklin D. Roosevelt. His presidency has been ranked among the upper tier in historical rankings of U.S. presidents. However, his personal conduct and allegations of sexual assault against him have made him the subject of substantial scrutiny. Since leaving office, he has been involved in public speaking and humanitarian work. He created the Clinton Foundation to address international causes such as the prevention of HIV/AIDS and global warming. In 2009, he was named the United Nations Special Envoy to Haiti. After the 2010 Haiti earthquake, Clinton and George W. Bush formed the Clinton Bush Haiti Fund. He has remained active in Democratic Party politics, campaigning for his wife's 2008 and 2016 presidential campaigns.