Fodbold Club Sydvest 05 (Danish pronunciation: [ˈfoðpʌltˌkʰlup syðˈvest nɔlˈfemˀ]), or simply Sydvest 05, is a Danish football club based in Tonder Municipality. The club is a merger established in Southwestern Sonderjylland in 2005 between Logum IF Fodbold, Bredebro IF, Ballum IF and Tonder SF Fodbold. Therefore, the club is an affiliation between the neighbouring towns of Ballum, Bredebro, Logumkloster and Tonder, who also share, since 2012, an under-19 and under-17 team besides the first team. The senior side is based in Tonder and Logumkloster, and play the vast majority of their home games at Tonder Stadion and Logumkloster Stadion which can hold a total of 1,200 spectators.
Upon the establishment of the club in 2005, the first team competed in Serie 2, the seventh tier division of Danish football, from which it promoted during the first year of existence. After four seasons in Serie 1, Sydvest 05 reached promotion to Jyllandsserien and after two seasons another promotion was achieved to the Denmark Series, the fourth division. In 2012, the club earned promotion to the Danish 2nd Division, the third tier division, in which it has competed since.
The Southwest Jutland collaboration is a member of the local football union, DBU Jutland (JBU) through which it has membership of the Danish Football Union (DBU). The teams of the local clubs involved in the merger continue to be organised by these, and compete in the lower divisions of Danish football.