Advanced Placement (AP) is a program in the United States and Canada created by the College Board. AP offers undergraduate university-level curricula and examinations to high school students. Colleges and universities in the US and elsewhere may grant placement and course credit to students who obtain qualifying scores on the examinations.

The AP curriculum for each of the various subjects is created for the College Board by a panel of experts and college-level educators in that academic discipline. For a high school course to have the designation as offering an AP course, the course must be audited by the College Board to ascertain that it satisfies the AP curriculum as specified in the Board's Course and Examination Description (CED). If the course is approved, the school may use the AP designation and the course will be publicly listed on the AP Course Ledger.

After the end of World War II, the Ford Foundation created a fund that supported committees studying education. The program, which was then referred to as the "Kenyon Plan", was founded and pioneered at Kenyon College in Gambier, Ohio, by the then-college president Gordon Chalmers. The first study was conducted by four prep schools—the Lawrenceville School, Phillips Academy, Phillips Exeter Academy, and St. Paul's School —and three universities—Harvard University, Princeton University and Yale University. In 1952 they issued the report General Education in School and College: A Committee Report which recommended allowing high school seniors to study college-level material and to take achievement exams that allowed them to attain college credit for this work. The second committee, the Committee on Admission with Advanced Standing, developed and implemented the plan to choose a curriculum. A pilot program was run in 1952 which covered eleven disciplines. In the 1955–56 school year, it was nationally implemented in ten subjects: Mathematics, Physics, Chemistry, Biology, English, History, French, German, Spanish, and Latin.

The College Board, a not-for-profit organization based in New York City, has run the AP program since 1955.

From 1965 to 1989, Harlan Hanson was the director of the Advanced Placement Program. It develops and maintains guidelines for the teaching of higher-level courses in various subject areas. In addition, it supports teachers of AP courses and supports universities. These activities are funded through fees required to take the AP exams.

In 2006, over one million students took over two million Advanced Placement examinations. Many high schools in the United States offer AP courses, though the College Board allows any student to take any examination regardless of participation in its respective course. Therefore, home-schooled students and students from schools that do not offer AP courses have an equal opportunity to take AP exams.

In 2007, hedge fund manager and philanthropist Whitney Tilson helped create a $1 million program (called Reach, for Rewarding Achievement) funded by philanthropists to pay students in 25 public schools and six Roman Catholic private schools in New York City who do well on Advanced Placement exams. High school students receiving a top score of five on one of the exams earned $1,000 (a four was worth $750, and a three was worth $500). The schools chosen for the program all had a high proportion of low-income black or Latino students. Tilson approached the Pershing Square Foundation to finance the project, and it agreed to give the project $1 million for its first year.

As of the 2024 testing season, exams cost $98 each, though the cost may be subsidized by local or state programs. Financial aid is available for students who qualify for it; the exam reduction is $36 per exam from College Board plus an additional $9 rebate per fee-reduced exam from the school. There may be further reductions depending on the state.