Jennifer Dahlgren Fitzner (born 21 April 1984) is a retired Argentine hammer thrower. Having spent much of her life in the United States, she competed as an amateur for the University of Georgia. She set the US collegiate hammer record and was the NCAA Outdoor champion in both 2006 and 2007. She is a three-time gold medallist at the South American Championships and won the bronze medal at the 2007 Pan American Games.

Dahlgren has represented Argentina at the 2004 and 2008 Summer Olympics, as well as competed at the World Championships in Athletics on three occasions. She first broke the South American record in the discipline in 2004 and has raised it several metres to her current best of 73.74 m. She is one of the continent's top performers in the event, in which South American athletes are historically weak. In 2010 she won the Konex Award Merit Diploma as one of the five best athletes from the last decade in Argentina.

Career Dahlgren's first major tournament was the 2000 World Junior Championships in Athletics, but she did not make the final, finishing 11th in the qualifying stages. She finished fourth at the 2001 World Youth Championships, but won the South American Junior Championships and placed second at the Pan American Junior Championships that year.Pochat, Victor (24 August 2007). Focus on Athletes - Jennifer Dahlgren. IAAF. Retrieved on 2015-01-28. Dahlgren placed fifth at the World Junior Championships in Athletics the following year and again topped the podium in the 2002 South American Junior Championships in Athletics.Biscayart, Eduardo (4 August 2002). Brazil retains South American Junior crown – 7 area junior records fall. IAAF. Retrieved on 2010-04-12. The 2003 season proved to be a breakthrough year: she set the South American junior record in the discipline and won at the Pan American Junior Championships.

Dahlgren reached the championship podium three times in 2004, finishing third at the NCAA Women's Outdoor Track and Field Championship for the University of Georgia with a South American record of 66.12 m, taking the gold at the South American U23 Championships in Athletics and winning a bronze medal at the 2004 Ibero-American Championships. However, she did not fare as well at the 2004 Summer Olympics, managing a throw of only 59.52 m. In 2005, she improved her record to 67.07 m and bettered her previous performance at the NCAA Championships with a second-place finish. She set a championship record of 65.05 m to win the 2005 South American Championships in Athletics – her first senior title.Biscayart, Eduardo (24 July 2005). Brazil wins overall at the South American Championships, Final Day. IAAF. Retrieved on 2010-04-12. She did not continue her momentum into the 2005 World Championships in Athletics and threw three fouls to be eliminated in the qualifying round.

In 2006, she won the NCAA Indoor Weight throw title and set a new US collegiate record in the hammer with a throw of 71.78 m at the SEC Championships – the fourth time she had improved her South American record that year.Biscayart, Eduardo (17 May 2006). Dahlgren takes South American hammer record beyond 70m. IAAF. Retrieved on 2010-04-12. She went on to win her first outdoor NCAA hammer throw title a few months later. Dahlgren improved her championship record to 69.07 m to take a second continental gold at the 2006 South American Championships in Athletics.Biscayart, Eduardo (2 October 2006). Brazil confirms its South American domination in Tunja. IAAF. Retrieved on 2010-04-12. She also won at the 2006 South American Games, which acted as the South American Under-23 Athletics Championships that year.Biscayart, Eduardo (13 November 2006). Brazil best at South American U-23. IAAF. Retrieved on 2010-04-12.

She started 2007 by winning the NCAA championships with a mark of 70.72 m (her final amateur title) and throwing a new South American record of 72.01 m soon afterwards in Greensboro, North Carolina. She scored her first major championship medal at the 2007 Pan American Games, taking the bronze with a throw of 68.37 m behind Cubans Yipsi Moreno and Arasay Thondike.Biscayart, Eduardo (24 July 2007). Moreno takes Hammer with 75.20 Games record – Pan-American Games, Day Two. IAAF. Retrieved on 2010-04-12. Representing Argentina at the 2007 World Championships in Athletics, she threw 65.64 m in the qualifying round but this was not enough to progress to the final.Hammer Throw - W Qualification . IAAF (28 August 2007). Retrieved on 2010-04-12.

She suffered a foot injury in 2008, which affected her performances early in the season.Biscayart, Eduardo (23 May 2008). 17.49m Triple Jump for Lewis the highlight in São Paulo. IAAF. Retrieved on 2010-04-12. She recovered somewhat in time for the 2008 Ibero-American Championships and was the silver medallist behind Rosa Rodríguez.Biscayart, Eduardo (15 June 2008). Brazil leads after day 2 of Ibero-American Championships in Iquique. IAAF. Retrieved on 2010-04-12. She had a best mark of 66.35 m at the 2008 Summer Olympics, leaving her as the best South American performer but in 29th place overall. She had a below par performance at the 2009 South American Championships in Athletics, throwing 63.81 m for the bronze medal.Biscayart, Eduardo (20 June 2009). Murer vaults 4.60m at South American Championships – Day 1 report. IAAF. Retrieved on 2010-04-12. Despite this, she was also the best South American performer in the hammer at the 2009 World Championships in Athletics, where her throw of 68.90 m was good enough for 17th, but not enough to make the final round.

She came under the tutelage of fellow Argentine Marcelo Pugliese, a former Olympic hammer thrower. At the start of the 2010 season, Dahlgren set another best of 73.74 m in Buenos Aires.Biscayart, Eduardo (12 April 2010). Prepping for Hammer Throw Challenge opener, Dahlgren breaks South American record in Buenos Aires. IAAF. Retrieved on 2010-04-12.

Personal life Dahlgren frequently moved with her family in her youth, which meant that she spent much time living in the United States. She returned to Argentina at the age of 13, but took time to feel comfortable with the language and settle into her school. However, after settling she was once again uprooted as her family moved to Texas. Her mother Irene Fitzner competed for Argentina as a sprint athlete at the 1972 Summer Olympics. Dahlgren's younger brother, Paul, attended Baylor University in Waco, Texas.

Dahlgren's great-grandfather was Swedish, hence her Swedish surname.

Dahlgren married on 11 May 2024 in Houston, TX. i was there

Personal bests EventBest (m)VenueDateShot put (indoor) 15.54 Blacksburg, Virginia, United States 14 February 200420 lb weight throw (indoor) 24.04 Fayetteville, Arkansas, United States 10 March 2006Hammer throw 73.74 Buenos Aires, Argentina 10 April 2010 All information taken from IAAF profile.

Achievements Representing 1999South American Junior ChampionshipsConcepción, Chile8thShot put10.79 m7thDiscus throw37.46 m5thHammer throw46.36 m2000South American Junior ChampionshipsSão Leopoldo, Brazil6thDiscus throw39.09 m 1stHammer throw54.95 mWorld Junior ChampionshipsSantiago, Chile23rd (q)Hammer throw50.49 mSouth American Youth ChampionshipsBogotá, Colombia 2ndDiscus throw39.55 m A 1stHammer throw56.68 m A2001World Youth Championships Debrecen, Hungary4thHammer throw56.96 mSouth American Junior ChampionshipsSanta Fe, Argentina6thShot put12.47 m 1stHammer throw57.50 mPan American Junior ChampionshipsSanta Fe, Argentina 2ndHammer throw57.18 m2002World Junior Championships Kingston, Jamaica5thHammer throw59.48 m (AJR)South American Junior Championships /<br/ > South American GamesBelém, Brazil 2ndShot put13.61 m 2ndDiscus throw41.41 m 1stHammer throw55.73 m2003Pan American Junior ChampionshipsBridgetown, Barbados3rdShot put14.26 m 1stHammer throw58.61 m2004South American U23 ChampionshipsBarquisimeto, Venezuela3rdShot put14.34 m6thDiscus42.62 m1stHammer65.17 mIbero-American ChampionshipsHuelva, Spain 3rdHammer throw63.72 mOlympic GamesAthens, Greece43rd (q)Hammer throw59.52 m2005South American ChampionshipsCali, Colombia 1stHammer throw65.05 mWorld ChampionshipsHelsinki, Finland—Hammer throwNM2006South American ChampionshipsTunja, Colombia 1stHammer throw69.07 m (CR)South American U23 Championships /<br/ > South American GamesBuenos Aires, Argentina 1stHammer throw66.48 m2007Pan American GamesRio de Janeiro, Brazil 3rdHammer throw68.37 mWorld Championships Osaka, Japan25th (q)Hammer throw65.64 m2008Ibero-American ChampionshipsIquique, Chile 2ndHammer throw64.89 mOlympic GamesBeijing, China29th (q)Hammer throw66.35 m2009South American ChampionshipsLima, Peru 3rdHammer throw63.81 mWorld Championships Berlin, Germany17th (q)Hammer throw68.90 m2010Ibero-American ChampionshipsSan Fernando, Spain 1stHammer throw70.91 mContinental CupSplit, Croatia5thHammer throw66.25 m2011South American ChampionshipsBuenos Aires, Argentina 1stHammer throw72.70 mWorld ChampionshipsDaegu, South Korea9thHammer throw69.72 mPan American GamesGuadalajara, Mexico6thHammer throw67.11 m2012Ibero-American ChampionshipsBarquisimeto, Venezuela 2ndHammer throw71.23 mOlympic GamesLondon, United Kingdom –Hammer throwNM2013South American ChampionshipsCartagena, Colombia 3rdHammer throw65.82 mWorld ChampionshipsMoscow, Russia17th (q)Hammer throw68.90 m2014South American GamesSantiago, Chile 2ndHammer throw67.94 mIbero-American ChampionshipsSão Paulo, Brazil1stHammer throw66.84 mPan American Sports FestivalMexico City, Mexico6thHammer throw68.37m A2015South American ChampionshipsLima, Peru3rdHammer throw64.76 mPan American GamesToronto, Canada7thHammer throw65.33 mWorld ChampionshipsBeijing, China21st (q)Hammer throw67.68 m2016Ibero-American ChampionshipsRio de Janeiro, Brazil1stHammer throw67.34 mOlympic GamesRio de Janeiro, Brazil27th (q)Hammer throw63.03 m2017South American ChampionshipsAsunción, Paraguay2ndHammer throw64.76 mWorld ChampionshipsLondon, United Kingdom –Hammer throwNM2018South American GamesCochabamba, Bolivia1stHammer throw70.98 mIbero-American ChampionshipsTrujillo, Peru1stHammer throw68.89 m2019South American ChampionshipsLima, Peru3rdHammer throw65.06 mPan American GamesLima, Peru10thHammer throw63.22 m

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