Râmnicu Sărat

In the 1980–81 season, Râmnicenii finished 9th in Series III of Divizia C and reached the Round of 32 in the Cupa României, being eliminated 1–2 by first-division side FC Olt at the Municipal Stadium in Râmnicu Sărat. The lineup for Olimpia in that match was: Arghir — Soare, Androne, Petrache, Prunică — Duță, Zamfir, Pușcă — Preda (66' Buzăianu), Morogan, Oprea.

In 1981, the team was taken over by the local Enterprise of Gaskets, Brakes, and Sealing and was renamed Ferodoul Râmnicu Sărat. It competed in Series III and finished in 5th place during the 1981–82 campaign. In 1982, the team reverted to the name Olimpia, finished 1st in Series III of Divizia C in the 1982–83 season, and earned promotion to Divizia B. The squad, coached by Marin Mustață, included T. Lăptoiu, Bîndar, Arghir, C. Roșca, Soare, Dumitrescu, Dorobanțu, Pătărescu, Bologan, M. Nicu, Gh. Dobre, Toma, G. Roșu, V. Roșu, Băbeanu, Bodan, Pușcă, Oprea, Țone, Tuculan, Preda, and Apostol.

In the following seasons, Olimpia was assigned to Series I in Divizia B, ranking 12th in the 1983–84 campaign under Marin Mustață for the first seven rounds and Cornel Negoescu for the remainder of the season, 7th in the 1984–85 season, 12th in the 1985–86 season, 10th in the 1986–87 season, and 17th in the 1987–88 season, resulting in relegation back to Divizia C.

In the 1988–89 season, under the guidance of Ion Moldovan, Olimpia won Series III of Divizia C, finishing eleven points ahead of the 2nd-placed team and returning to the second division after just one year. The squad included the following players: Cristea, Stoian, Nițu, Cerbu, Stanciu, Aramă, Ioniță, Trocea, Marin Roșu, Roșca, Gabriel Roșu, Mitracu, Stănițel, Ion Cățoi, Răduță, Dulea, Badea, Tigoianu (15 goals), Răileanu, Petre, and Stănescu.

Back in Divizia B, Olimpia competed for three seasons, finishing 6th in the 1989–90 season, 12th in the 1990–91 season, and 14th in the 1991–92 season, when it was relegated to the third division due to the second division being reduced from three series to only two series of eighteen teams. The decline continued in the 1992–93 season of the third division, as Olimpia finished 18th out of 20 in Series II and was relegated to the fourth division.

In the fourth division, Olimpia spent five consecutive seasons, winning the Buzău County Championship twice but failing to secure promotion each time. In the 1994–95 season, the play-off was lost against Prod Câmpineanca, the Vrancea County winners, with scores of 1–2 and 2–3. In the 1996–97 season, although a 2–1 victory after extra time was achieved against Textila Prejmer, the Brașov County winners, promotion was missed, as the team did not rank among the top sixteen in the special standings of the best-performing teams in the promotion play-off.

In 1998, the team was renamed Acvaterm Râmnicu Sărat after being taken over by the municipally owned public utility company. It took the place of newly promoted Divizia C side Hidroconcas Buzău and went on to finish 5th in Series I of the third tier in the 1998–99 season.

In the following season, Avaterm faced relegation after finishing 16th out of 18 in Series II, but remained in Divizia C after it bought the place of newly promoted Aromet Poșta Câlnău. The team then reverted to the Olimpia name and competed in Series II of the third division, finishing 8th in the 2000–01 season. Râmnicenii competed in the following five seasons in Series II of Divizia C, ranking 12th in both the 2001–02 and 2002–03 campaigns, 4th in the 2003–04 season, and 7th in the 2004–05 season.

In 2005, the team was taken over by the Municipality of Râmnicu Sărat and renamed Club Sportiv Municipal (CSM) Râmnicu Sărat. The impact was quickly noticeable, as results began to improve: the team finished 2nd in Series II in the 2005–06 season, followed by a 6th-place finish the next year in Series I. In the 2007–08 campaign, CSM placed 3rd in Series II, just one point behind Juventus București and the promotion play-off spot.

Promotion to the second division was finally secured in the 2008–09 season, when CSM comfortably won Series I, finishing twelve points ahead of 2nd-placed Oțelul Galați II. In Liga II, the team was coached by Mihai Ciobanu in the first part of the season and by Cătălin Cighir in the second, and struggled to cope with the demands of the competition and ended the 2009–10 campaign in 17th place, suffering relegation after just one year. Deducted six points for failing to reach the twenty-five-point minimum in the previous season, Râmnicenii, led by Cighir in the first half and Dan Paveliuc in the second, went on to finish 12th in the 2010–11 season, in Series II of Liga III.

After a poor start to the 2011–12 season, Marian Roșu replaced Dan Paveliuc at the beginning of October, guiding the team to a 4th-place finish in Series I. Roșu left CSM Râmnicu Sărat exactly a year later and was replaced by players Marius Tîrîlă and Sorin Bodoc as caretakers, before former coach Dan Paveliuc returned to take charge. Although the team finished 4th in Series II of Liga III in the 2012–13 season, it withdrew from the championship due to financial reasons and continued to compete in Liga IV – Buzău County, after reorganizing administratively and being renamed Olimpia. Under Paveliuc’s leadership, the team finished the 2013–14 season in 4th place.

Under the management of player-coach Marius Tîrîlă, Olimpia earned promotion at the end of the 2014–15 season, after winning Liga IV – Buzău County and defeating Avântul Valea Mărului, the Galați County champions, in the promotion play-off: 1–1 at the Municipal Stadium in Râmnicu Sărat and 6–0 at the Prof. Costică Popovici Stadium in Valea Mărului. Back in Liga III, Olimpia finished the 2015–16 season in 2nd place in Series I, seven points behind Sepsi OSK, and ranked 9th in the following campaign.

In the summer of 2017, the team reorganized once again, returning to the name CSM Râmnicu Sărat, being taken over by the Municipality and reintegrated into the sports club of the same name, finishing the 2017–18 season once again in 9th place.

The 2018–19 campaign proved very disappointing for CSM, as the team finished in 14th place. Already relegated to the fourth division, player-coach Marius Tîrîlă was replaced by Dan Paveliuc four rounds before the end of the season.