Editor's note: This list was updated Aug. 4 with two Olympian runners from the island of Kiribati.
Mormon Times now counts 24 members of The Church of Jesus Christ of Latter-day Saints who are competing in the 2012 Olympic Games in London. The opening ceremonies are Friday and the competition runs through Aug. 12.
Track and Field: Jill Camarena-Williams, of Tucson, Ariz., is the current indoor American shot put record holder. She was third at the 2011 world championships and finished 12th in 2008 at the Beijing Olympics. She graduated from Stanford and did post-graduate studies at Brigham Young University.
When to watch: The qualifying round and the finals are on Aug. 6.
Pole vaulter Becky Holliday, 32, a former University of Oregon student, was the runner-up in the Olympic trials. She was the 2003 NCAA champion in the sport and has since financed her training by working odd jobs, including airport baggage handler and serving tables.
When to watch: The qualification round is Aug. 4 and the final is Aug. 6.
When to watch: USA has three preliminary games. July 30 vs. Hungary, Aug. 1 vs. Spain and Aug. 2 against China.
Volleyball: Middle-blocker Russell Holmes served a Mormon mission in London, England, and the Orange County, Calif., native also played on Brigham Young University's volleyball team. Libero Rich Lambourne, also a BYU alumni and Southern California native, was on the 2008 team that won the gold medal and he played in each of the 33 sets. Ryan Millar, who also competed in 2008, is on the reserve roster.
When to watch: Preliminary rounds are July 29, 31, Aug. 2, 4 and 6 with the quarterfinals on Aug. 8, semifinals on Aug. 10 and the finals on Aug. 10.
Beach volleyball: Bountiful native and University of Utah alum Jake Gibb, who lives in Costa Mesa, Calif., was fifth in 2008 with Sean Rosenthal.
When to watch: Preliminary rounds are July 28-Aug. 2; round of 16 is Aug. 3-4, quarterfinals are Aug. 6, semifinals on Aug. 7 and the finals on Aug. 9.
Weightlifting: California native Sarah Robles, 23, is the No. 1-ranked woman weightlifter in the U.S. and will compete in the 75-kilogram-plus weight class.
When to watch: The competition is Aug. 5.
Racewalking: John Nunn, a 34-year-old U.S. Army staff sergeant of Bonsall, Calif., is competing in the 50-kilometer racewalk. The returned missionary competed in the 20-kilometer racewalk in 2004.
When to watch: The men's 50-kilometer racewalk is Aug. 11.
Swimming: Texas A&M University swimmer Breeja Larson, of Mesa, Ariz., will compete in the women's 100-meter breaststroke and the women's 4x100 medley relay. The 20-year-old was the surprise winner during the breaststroke Olympic trials.
When to watch: The breast stroke competition is July 29 with the finals on July 30 and the relay is Aug. 3 and 4.
BMX Cycling : BYU graduate Arielle Martin, 26, who calls Cedar Hills, Utah, home, crashed while qualifying for the 2008 Games and didn't make the team. A fourth-place finish at the World Championships qualified her to go this year.
When to watch: The seeding run is Aug. 8 and the semifinals and finals are Aug. 10.
Synchronized swimming: Oklahoma native Mary Killman is part of a duet with Mariya Koroleva. Killman was named the USA Synchro Athlete of the Year for the 2010 and 2011 seasons, according to her bio on NBCOlympics.com
When to watch: The qualification round for the technical routine is Aug. 5 and the free routine is Aug. 6 with the finals on Aug. 7.
Track and Field: Valerie Adams took gold in the women's shot put in Beijing and is the 2011 world champion. She also held that title in 2007, 2008 and 2009.
When to watch: The qualifying round and the finals are on Aug. 6.
Swimming: Hayley Palmer, 23, competed in the women's 4x200-meter freestyle relay team in Beijing but didn't medal. She is scheduled to compete in the women's 50-meter freestyle and the women's 4x100 freestyle relay.
When to watch: The women's 4x100 freestyle relay is July 28 and the women's 50-meter freestyle heats and semifinals are on Aug. 3, with the finals on Aug. 4.
Fencing: Maria Gariella Martinez Gascon competed in the 2008 Olympics in Beijing and will compete again this year in the women's individual epee.
When to watch: The women's individual epee rounds are on July 30.
Also, Johana Beatriz Fuenmayor Choles will compete in the women's individual foil in her first Olympics.
When to watch: The women's individual foil rounds are on July 28
Swimming: BYU swimmer Andrew Rutherfurd is competing in the men's 100-meter freestyle. The 23-year-old, who has dual U.S. and Bolivia citizenship, broke Bolivia's national record in the 100-meter and 200-meter freestyle races.
When to watch: The men's freestyle heats and semifinals are on July 31 and the finals are Aug. 1.
Swimming: Australia native Celeste Brown, 17, is competing in the women's 50-meter freestyle. She has served as her Laurel class president and is a seminary student.
When to watch: The women's 50-meter freestyle heats and semifinals are on Aug. 3 and the finals are Aug. 4.
Track and field: Patricia Taea, 18, of the Avarua Cook Island District, is competing in the women's 100-meter sprint.
When to watch: The preliminaries and round 1 are on Aug. 3 with the semifinals and finals on Aug. 4.
Rowing: Lucia Palermo, of the Pacheco Ward, Buenos Aires Argentina Litoral Stake, competed in 2004 in Athens and is now in London. The 26-year-old raced twice on the Eton Dourney and has advanced to Tuesday's quarterfinals in the women's single sculls.
When to watch: Quarterfinals are Tuesday with the semi-finals on Aug. 2 and the finals on Aug. 4
Women's soccer: Bruna Beatriz Benites Soares, of the Amambaí Ward, Campo Grande Brazil Stake, is a defender for the Brazilian team. The 26-year-old was baptized in 2000, according to this blog's feature on her.
Brazil beat Cameroon 5-0 on July 25 and also won 1-0 against New Zealand on July 28. Their next game is Tuesday against Great Britain, who is also 2-0 in the preliminary group round.
When to watch: The teams are divided into groups and each plays all of the teams in their groups in the preliminary rounds, which go through July 31. The top teams then go on to the quarterfinals on Aug. 3, the semifinals on Aug. 6 and the medal matches on Aug. 9.
Swimming: Oyungerel Gantumur, 20, of the Erdenet 2nd Branch, Darkhan Mongolia District, competed in the women's 100 meter breaststroke last weekend. She was 45th of 46 swimmers after the qualifying heats.
Wrestling: Nathaniel Tu'amoheloa, 18, of the Mesepa International Ward, Pago Pago Samoa West Stake, will be competing in the men's 96 kg freestyle wrestling competition on Aug. 12.
Track and Field: Kainguae David, 17, of Teaoraereke 2nd Ward, Tarawa Kiribati West Stake, sprinted to a personal best time of 13.61 seconds in the 100-meter Friday. Also, Nooa Takooa, 19, of the Moroni Ward, Tarawa Kiribati East Stake, is scheduled to run in the men's 100-meter sprint today.
Kiribati is south of Hawaii in the Pacific Ocean.
If you know of other LDS athletes competing in the 2012 Summer Games in London, please let us know at firstname.lastname@example.org.