Gustav Krojer (30 June 1885 – 30 January 1945) was an Austrian track and field athlete who competed in the 1906 Intercalated Games and the 1912 Summer Olympics, he also appeared twice for the Austria national football team.

[3] Six years later and now 26 years old, Krojer was competing at the 1912 Summer Olympics; this time, he only entered four events, and sadly, he failed to reach any finals again.

[1] Krojer was national champion in the javelin throw in 1911 and the high jump in 1913.

[1] Krojer also played football; he was a defender; between 1907 and 1913, he played for Wiener Sport-Club,[4] and in 1911 he was called up for international duty and played twice against Hungary, winning the first game at home 3-1 in a friendly,[5] then losing the return match later in the year 0-2.

[6] On 30 January 1945, Krojer died in Vienna, Austria (at the time part of Nazi Germany).