| Personal information | |||
|---|---|---|---|
| Full name | Marius Achim Baciu | ||
| Date of birth | 1 May 1975 | ||
| Place of birth | Mediaș, Romania | ||
| Height | 1.81 m (5 ft 11 in) | ||
| Position(s) | Defender | ||
| Youth career | |||
| –1992 | Gaz Metan Mediaș | ||
| 1992–1993 | Inter Sibiu | ||
| Senior career* | |||
| Years | Team | Apps | (Gls) |
| 1992–1996 | Inter Sibiu | 57 | (1) |
| 1993–1994 | → Gaz Metan Mediaș (loan) | 24 | (0) |
| 1996–2002 | Steaua București | 140 | (8) |
| 2002–2004 | Lille | 34 | (1) |
| 2004–2005 | Rot-Weiß Oberhausen | 24 | (3) |
| 2005 | Panserraikos | 14 | (0) |
| 2006–2007 | Oțelul Galați | 36 | (2) |
| 2007 | Universitatea Cluj | 9 | (0) |
| 2008 | Gaz Metan Mediaș | 11 | (0) |
| Total | 349 | (15) | |
| International career | |||
| 1996–1997 | Romania U21 | 12 | (2) |
| 1998–2002 | Romania | 2 | (0) |
| Managerial career | |||
| 2009 | Voința Sibiu | ||
| 2010 | Pandurii Târgu Jiu | ||
| 2010 | Unirea Alba Iulia | ||
| 2011 | Silvania Şimleu Silvaniei | ||
| 2011 | Politehnica Iași | ||
| 2011–2012 | Flacăra Făget | ||
| 2012 | FC Vaslui (assistant) | ||
| 2012–2013 | SC Bacău | ||
| 2014–2015 | Academica Argeș | ||
| 2015 | Concordia Chiajna | ||
| 2017 | Turris Turnu Măgurele | ||
| 2017–2019 | Daco-Getica București | ||
| 2019 | Turris Turnu Măgurele | ||
| 2020 | Sohar SC | ||
| 2020–2021 | Al-Taqadom | ||
| 2021–2022 | Al-Arabi | ||
| 2022–2023 | Al-Nahda | ||
| *Club domestic league appearances and goals | |||
Marius Achim Baciu (born 1 May 1975) is a Romanian former player and current football head coach.