Mathematical Competitions in the United States

• AMATYC Student Math League - Series of mathematical contests organized by The American Mathematical Association of Two-Year Colleges (AMATYC).
  
• American Invitational Mathematics Examination (AIME) - Intermediate examination for the top scoring students from the AMC 10 and AMC 12. Site includes problem archive, publications.
• American Mathematics Contest 10 - Contest for students in grade 10 or below. Site includes results, publications, photos, awards, faq.
• American Mathematics Contest 12 - Contest for students in grade 12 or below. Site includes results, publications, problem archive, awards.
• American Mathematics Contest 8 - contest for middle school students in United States. Site includes results, past problems, statistics, photos, awards.
• American Regions Math League (ARML) - Results and past problems for the ARML, an annual national competition.
• The Continental Mathematics League and The National Olympiads - CML offers a series of math meets for grades 2-9, a calculus league for the high school, and a Java computer contest.
• Furman Mathematics Tournament - Hosted by the Furman University. Site includes past results and written problems.
• Harvard-MIT Mathematics Tournament - Annual math tournament for high school students, held at MIT and at Harvard in alternating years.
• High School Mathematical Contest in Modeling (HiMCM) - A two-day mail-in team contest in which students work in teams to apply mathematics to real-world modeling problems.
• The Mandelbrot Competition - Includes introduction to contest, news, memos, resources and on-line registration.
• Math League - Specializes in math contests, books, and computer software designed for students from the 4th grade through high school.
• MathCounts - United States national math coaching and competition program for middle school students.
• Mu Alpha Theta National Contest - Annual math writing contest sponsored by the Nationa Mathematics Honor Society. Participants must be members.
• National Assessment & Testing - Offers five competitions administered and scored at your school, then returned to them by mail for determination of awards.
• William Lowell Putnam Mathematical Competition - Annual student math competition sponsored by the Mathematical Association of America.
• Redwood Empire Mathematics Tournament - Annual event held at Humboldt State University for all middle and high schools students.
• UIUC Math Contests Webpage - The UIUC Undergraduate Mathematics Contest. Includes practice problems and solutions.
• United States of America Mathematical Olympiad (USAMO) - Final contest used for the selections of the U.S. IMO team. Site includes problem archive, publications, awards.
• Wisconsin Mathematics, Engineering, and Science Talent Search - Offers problem sets of five challenging problems designed to encourage exploration outside the classroom and inspire students to develop problem-solving and mathematical writing skills.
• Alabama Statewide Mathematics Contest - State contest available to high school students in three divisions.
• Grissom High School Math Team - Hosts annual math tournament with several categories including pre-algebra, algebra, geometry, algebra II. and comprehensive.
• Rocket City Math League - Based in Huntsville, Alabama. Website contains registration information and sample tests.
• The University of Alabama High School Math Tournament - Math Tournament hosted by the University of Alabama Mathematics Department each fall for excellent high school students from all over Alabama and throughout the southeast. The tournament consists of a written exam and a ciphering competition.
• Bay Area Math Circle - Features The Bay Area Mathematical Olympiad (BAMO) and weekly program for San Francisco Bay Area high and middle school students.
• Bay Area Math Meet - Annual, all-day competition featuring both individual and team events. the core events include Math Bowl and Test of Ingenuity. Website contains detailed description, past exam, and results.
• Creative Studies Math Competition - Hosted by the College of Creative Studies at University of California, Santa Barbara.
• Math Challenge - Sponsors by Lawrence Livermore National Laboratory. Students participate in a one-hour written test both individually and as a team.
• Pomona College / University of Wisconsin High School Math Talent Search - Year around contest that tests talent in problem solving.
• Santa Clara University High School Mathematics Contest - An annual High School Mathematics Contest usually scheduled on the second Saturday in November. This is a three hour exam which tests problem solving skills and mathematical ingenuity.
• Stanford Math Tournament - Annual math event sponsored by the Stanford Mathematics Department. Site contains results, past tests and solutions.
• Colorado Mathematical Olympiad - Introduction to Mathematical Olympiad, old problems, pages on winners, speakers and judges from 1999 and 2000.
• David Essner Mathematics Competition - Annual competition among the secondary school students of Miami-Dade County in Florida with results and past problems.
• Armstrong Atlantic State University Math Tournament - Features annual mathematics tournament for high school students and middle school Math Bowl.
• Gainesville College Math Tournament For Two-Year Colleges - Held in the spring of each year, the competition features both individual and team events involving problems from calculus, trigonometry, geometry, statistics, and algebra.
• Junior Varsity State Tournament - Hosted by Woodward Academy. Information page includes past results and news for future contests.
• University of Georgia High School Mathematical Tournament - Hosted by the UGA Department of Mathematics and Math Club for high school students in Georgia and neighboring states. The tournament consists of three challenging rounds: ciphering, written and team collaboration.
• Illinois Council of Teachers of Mathematics State Math Contest - The Illinois Council of Teachers of Mathematics sponsors competitive mathematics events for high school students and in-school contest for grade school students.
• High School Math Contest - Contains contest information and archives of past problems. Competition hosted by the Indiana University Purdue University Indianapolis (IUPUI) Department of Mathematical Sciences.
• Indiana State Mathematics Contest - Annual contest sponsored by the Indiana Council of Teachers of Mathematics. Five testing categories include Pre-Algebra, Algebra, Geometry, Algebra II, and Comprehensive.
• Rose-Hulman High-school Mathematics Contest - Annual contest hosted by the Rose-Hulman Institute of Technology.
• Kentucky MathCounts - Math coaching and competition program for middle school students.
• Louisiana State University Mathematics Contest - Includes contest information, results, photo gallery, as well as problems and solutions from previous contests.
• Johns Hopkins University High School Math Tournament - Conceived in 1998 by Chirag B. Patel, it is one of the largest math competitions for high school students on the Eastern Coast of the USA.
• University of Maryland Math Competition - Open to all high school students in Maryland and the District of Columbia, with past results, problems and solutions.
• Harvard-MIT Mathematics Tournament - An annual math tournament for high school students, held at MIT and at Harvard in alternating years.
• WPI Invitational Math Meet - Annual math meet on the campus of Worcester Polytechnic Institute.
• Math Masters of Minnesota - A team state competition for 5th and 6th graders in Minnesota.
• Minnesota High School Math League - The official website of the Minnesota High School Math League.
• Minnesota Junior High School Mathematics League - Competition for junior high students that meets multiple times per year.
• Minnesota MathCounts - Math coaching and competition program for middle school students. Offers information on state contest and coaching materials for schools throughout Minnesota.
• SCSU Math Contest - Annual event hosted by the St. Cloud State departments of mathematics, statistics, and computer science for students in grades 7-12.
• Great Plains Math League - Sponsors several high school math contests in Missouri, Iowa and Kansas.
• Math Field Day - Annual event hosted by the Southeast Missouri State University. Contains information, results, and sample contests.
• St. Louis Community College - Sponsors the Excellence in Math Contest and Weekly Math Contest.
• New Jersey Math Counts - Math coaching and competition program for middle school students. Offers information on state contest.
• North Carolina State Mathematics Contest - State contest that covers Algebra I, II and Geometry.
• Calculus Competition - Contest open to students at Youngstown State University. Includes a collection of past contest problems.
• OSU High School Math Contest - Open to students in Oklahoma. Modeled after the William Lowell Putnam Mathematical Competition.
• University of South Carolina High School Math Contest - Competition for South Carolina high school students. Sites contains results, statistics, problems and solutions.
• Rice Mathematics Tournament - Contest for high school students from the Texas/Louisiana area. Contain Rules, results, and sample problems.
• Texas MathCounts - Math coaching and competition program for middle school students.
• Virginia Tech Regional Mathematics Contest - Sponsored each fall by the Mathematics Department at Virginia Tech, initially conceived as a regional preliminary contest to the Putnam competition.
• Wisconsin Mathematics, Engineering and Science Talent Search - Open to high school and middle school students in the state of Wisconsin and throughout the world. Contest involves solving five sets of five problems distributed during the school year.