Ulm

The older of the two predecessor sides was founded on 12 April 1846 as Turnerbund Ulm. They had an on-again, off-again^[] relationship with Turnverein Ulm through the 1850s.^[] The football department became independent in 1926 as Ulmer Rasensport Verein and in 1939 would merge with Ulmer Fußball Verein, and their old clubmates in TB Ulm and TV Ulm, to form TSG Ulm 1846.^[] In 1968, RSVgg Ulm became part of TSG Ulm 1846.

1. Schwimm- und Sportverein Ulm was formed in 1928.

The football department of Turnerbund Ulm became independent in 1926 as Ulmer Rasensportverein and in 1939 would merge with Ulmer Fußballverein, and their old club mates in TB Ulm and TV Ulm, to form TSG Ulm 1846.^[] Throughout this time the club played in local competition before joining the Gauliga Württemberg, one of sixteen top flight divisions formed in the 1933 reorganisation of German football under the Third Reich, for the 1939–40 season. The club played there until the end of World War II. After the war they began play in the 2. Oberliga Süd (II) and did well enough to make occasional advances to the Oberliga Süd (I) for short stays before falling back again. In 1963, with the formation of the Bundesliga, Germany's new top-flight professional league, TSG Ulm 1846 found itself in the Regionalliga Süd (II) for a couple of^[][] seasons before slipping to tier III and IV level play. In 1968, RSVgg Ulm became part of TSG Ulm 1846.

1. Spiel- und Sportverein Ulm was formed in 1928 and, after two seasons in the Bezirksliga Bayern, joined the Gauliga Württemberg in 1933, well before their future partner, where they earned just mid-table finishes. After the war and leading up to their union with TSG 1846, they played as a third or fourth division side. Finally, in 1970, 1. SSV Ulm merged with TSG 1846 to form SSV Ulm 1846.

At the time of the merger.^[] both clubs were playing football in the tier III Amateurliga Württemberg and would continue to do so for a nearly a decade. In 1980, the combined side advanced to the 2. Bundesliga Süd and would spend six of the next ten years playing at that level where, except for a fifth-place finish in 1982, their results were well down the table. After another decade in the level III Amateur Oberliga Baden-Württemberg and Regionalliga Süd, 1846 made an unexpected^[] breakthrough after just one season in the 2. Bundesliga with a third-place finish that led to the club's promotion to the top-flight Bundesliga for the 1999–2000 season. Even though the issue was not decided until the last day of the season, Ulm could do no better than a sixteenth-place finish and returned to the second division. The 2000–01 season was an unqualified disaster^[] for the club: they could manage only another sixteenth-place finish and were sent back down to the Regionalliga Süd (III). They were then denied a licence over the chaotic state of their finances which plunged^[] the club down to the fifth tier Verbandsliga Württemberg. Afterwards Ulm worked their way back, to the Oberliga Baden-Württemberg (IV) in 2002, and the Regionalliga in 2008.

Following the 2009 European football betting scandal, the club released three allegedly involved players, Davor Kraljević, Marijo Marinović and Dinko Radojević. In January 2011, the club was declared insolvent, and the results of the 2010–11 season were declared void. The club was relegated to the Oberliga Baden-Württemberg but immediately won the 2011–12 title, finishing nine points clear of second-placed VfR Mannheim and earning promotion to the new Regionalliga Südwest.

In May 2014, SSV Ulm 1846 was once again close to insolvency, for the third time in 13 years, requiring €420,000 in financial support before the end of the month to ensure survival. The club eventually entered administration and was relegated back to the Oberliga. After two seasons, SSV Ulm 1846 was promoted to the Regionalliga in May 2016.

On 28 May 2023, SSV Ulm 1846 secured promotion to 3. Liga for the first time from 2023 to 2024, after defeating Barockstadt Fulda-Lehnerz 5–0 and becoming champion of the Regionalliga Südwest.

On 4 May 2024, SSV Ulm 1846 were crowned 3. Liga champions and earned back-to-back promotion to 2. Bundesliga for the 2024–25 season and the first time since 2000–01 season, after defeating Viktoria Köln 2–0.