SG Germania Wiesbaden is a German association football club from the city of Wiesbaden in Hesse.
The clubs two most notable achievement came when it won the tier-one Kreisliga Hessen in 1920 and, almost 50 years later, reached as the Germany's second division for one season in 1966–67.
Formed in 1903, the club became part of the A-Klasse Südmain, a regional first division in the early days of German football. The club then disappeared from the highest level and did not play in the new Nordkreis-Liga, unlike its local rival SV Wiesbaden.
After the First World War, Germania became part of the new Kreisliga Hessen, which it won in its first season, 1919–20. In the group stages of the Southern German championship, the team was knocked out by Saar 05 Saarbrücken and Pfalz Ludwigshafen. In the seasons that followed, Germania could not continue its good performance and, in 1923, the team was relegated, at a time when the Southern German football leagues were reorganised once more. Instead of the new Bezirksliga Rheinhessen-Saar, the club ended up playing in the tier-two Kreisliga Rhein-Main.
In 1926, the club came close to promotion, finishing on equal points with Alemannia Worms but then lost the decider 0–2. The year after, it experienced the same with a 0–1 loss to Olympia Worms. It did however earn promotion for a year to the Bezirksliga Main-Hessen for the 1927–28 season. After this, until the outbreak of the Second World War, the club remained a non-described side in this league. For a time, in the early 1930s, the club merged with local rival SV Wiesbaden but this did not last and by 1934, Germania was independent again.
After the war, Germania entered the Bezirksklasse Wiesbaden, a local third division and, from there, earned promotion to the 2nd Amateurliga Wiesbaden in 1951. Two years later, it won the 2nd Amateurliga and earned entry into the Amateurliga Hessen, the third tier. The club had its best season in this era in 1955–56, finishing second in the Amateurliga, 14 points behind champions SpVgg Neu-Isenburg. The season after, the club was relegated, coming second-last. It became something of an elevator side, earning promotion back to the Amateurliga in 1958, 1960 and 1962, to be relegated again in 1959 and 1961. Finally, in the 1962–63 season, the club archived some stability and maintained its Amateurliga status.