| Guillermo Sara | |
| Fullname: | Guillermo Sara |
| Birth Date: | 1987 9, df=yes |
| Birth Place: | Santa Fe, Argentina |
| Height: | 1.82 m |
| Youthyears1: | 1991–2008 |
| Youthclubs1: | Atlético Rafaela |
| Position: | Goalkeeper |
| Years1: | 2008–2013 |
| Caps1: | 141 |
| Goals1: | 0 |
| Years2: | 2013–2014 |
| Caps2: | 15 |
| Goals2: | 0 |
| Years3: | 2015–2018 |
| Caps3: | 30 |
| Goals3: | 0 |
| Years4: | 2018–2020 |
| Caps4: | 5 |
| Goals4: | 0 |
| Years5: | 2020–2021 |
| Caps5: | 24 |
| Goals5: | 0 |
| Nationalyears1: | 2006 |
| Nationalteam1: | Argentina U20 |
| Nationalcaps1: | 8 |
| Nationalgoals1: | 0 |
Guillermo Sara (born 30 September 1987) is a retired Argentine footballer, who played as a goalkeeper.
Born in Santa Fe, Sara joined Atlético Rafaela's youth setup in 1991, aged four.[1] In 2006, he was promoted to the first-team, but only made his senior debuts on 1 November 2008, starting in a 2–1 away win over Tiro Federal.
On 4 August 2012 Sara became the first Argentine goalkeeper to defend two penalties in one game, both from José Sand in a 1–1 draw against Racing Club.[2]
On 10 July 2013 Sara joined La Liga side Real Betis in a season-long loan deal, with a €1 million buyout clause.[3] He made his division debut on 25 August, starting in a 1–2 home loss to Celta de Vigo.[4]
In 2015, Sara signed with Argentinian club Boca Juniors. On 28 September 2016, Sara saved two penalties against Lanús in the Round of 16 of the Copa Argentina.
On 1 January 2022, Sara announced his retirement from football, after being without contract since 3 August 2021, when he terminated his contract with Atlético de Rafaela.[5]