Croatia competed at the 2012 Summer Olympics in London, United Kingdom, from 27 July to 12 August 2012. This was the nation's sixth consecutive appearance at the Summer Olympics. The Croatian Olympic Committee sent the nation's largest delegation to the Games. A total of 108 athletes, 64 men and 44 women, competed in 17 sports. Women's basketball, men's water polo, and handball were the only team-based sports in which Croatia had its representation in these Olympic Games. Among the sports played by athletes, Croatia also marked its Olympic debut in judo and fencing. Croatian athletes featured two sets of twins. Table tennis player and Olympic silver medalistZoran Primorac became the first Croatian athlete to participate in seven Olympic Games as an individual athlete, and was also the oldest athlete of the team, at age 43. Venio Losert, captain of the men's handball team, was appointed by the committee to carry the nation's flag at the opening ceremony. Croatia left London with a total of 6 Olympic medals. This was the nation's most successful Olympics, based on the most medals won at a single games. All gold medals, being the highest in the nation's Olympic history, were awarded for the first time in women's discus throw, men's trap shooting, and men's water polo.
Medalists
Athletics
Croatian athletes have achieved qualifying standards in the following athletics events : Former high jump world champion Blanka Vlašić did not compete in the London Olympics due to injury problems, although she was qualified for the Games. ;Key
Note – Ranks given for track events are within the athlete's heat only
Q = Qualified for the next round
q = Qualified for the next round as a fastest loser or, in field events, by position without achieving the qualifying target
Robert Kišerlovski was initially selected for road race, but he had to withdraw after he got injured on the 14th stage of Tour de France. As a consequence, Kristijan Đurasek was selected as a replacement. Đurasek's participation was later confirmed by IOC.
Fencing
Croatia has qualified 1 fencer. ;Men
Gymnastics
Artistic
;Men ;Women
Handball
;Summary
Men's tournament
;Roster ;Group play ;Quarter-final ;Semifinal ;Bronze medal match
Women's tournament
;Roster ;Group play ;Quarter-final
Judo
Rowing
;Men Qualification Legend: FA=Final A ; FB=Final B ; FC=Final C ; FD=Final D ; FE=Final E ; FF=Final F ; SA/B=Semifinals A/B; SC/D=Semifinals C/D; SE/F=Semifinals E/F; QF=Quarterfinals; R=Repechage
Sailing
Croatia has qualified 1 boat for each of the following events. ;Men ;Women M = Medal race; EL = Eliminated – did not advance into the medal race;
Croatian swimmers have achieved qualifying standards in the following events, and 1 at the Olympic Selection Time ): ;Men ;Women
Table tennis
Croatia has qualified four athletes for singles table tennis events. Based on his ITTF world rankings as of 16 May 2011 Zoran Primorac has qualified for the men's event.