|Full name||Nelson David Cabrera Báez|
|Date of birth||22 April 1983|
|Place of birth||Itauguá, Paraguay|
|Height||1.91 m (6 ft 3 in)|
|2009–2010||→ CFR Cluj (loan)||5||(0)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 10 February 2019|
Nelson David Cabrera Báez (Spanish pronunciation: [nelsondaˈβið kaˈβɾeɾa];[a] born 22 April 1983 in Itauguá) is a football defender who plays for Club Always Ready. Born in Paraguay, he represented the Paraguay national football team once in a friendly before naturalizating as a Bolivian and switching to represent Bolivia internationally.
Cabrera started his career at Olimpia Asunción and moved to rivals Cerro Porteño in 2005. There he won two championships and was team captain from 2007 to 2008. He was then transferred to CSD Colo Colo of Chile for $1,000,000. In the 2009–2010 season he played for CFR Cluj of Romania, where he won the National League and played in the UEFA Europa League.
Cabrera was born and raised in Paraguay, and represented their national team in a friendly match in 2007. However, later in his career he played in Bolivia, gained their nationality and debuted officially for the Bolivia national football team in 2016. FIFA regulations required players switching nationalities to have resided in the country for at least five years, but Cabrera only had for four. He was subsequently found to be ineligible by FIFA resulting in forfeiture of the preliminary 2018 FIFA World Cup qualification games between Bolivia and Peru on 1 September 2016 and between Chile and Bolivia on 6 September 2016. Bolivia appealed the decision of FIFA to their own appeal committee, and then to the Court of Arbitration for Sport. It was not disputed that Cabrera was ineligible. However, Bolivia questioned FIFA's right to investigate, and argued that a protest must be submitted within an hour of the match in question. Both appeals were dismissed.