|Full name||Emmanuel Osei|
|Date of birth||23 August 1982|
|Place of birth||Accra, Ghana|
|Height||1.80 m (5 ft 11 in)|
|2003||Hearts of Oak||31||(2)|
|2005–2006||→ Politehnica Timişoara (loan)||13||(1)|
|2008||Wa All Stars|
|2009–2010||New England Revolution||44||(0)|
|2013||Hearts of Oak|
|* Senior club appearances and goals counted for the domestic league only and correct as of 3 December 2013.
Born in Accra, Osei began his career in 2001 with regional club Echomog, and moved to Suhum Maxbees of the Poly Tank Division One League a year later. He played for his third team in as many years in 2003 after transferring to Accra Hearts of Oak SC, before moving to Turkey to play for Akçaabat Sebatspor (then in the top flight), also in that year.
For the 2004–05 season Osei joined A.S. Livorno Calcio of Serie A, going much unnoticed for the majority of the campaign. In two appearances in May, he played in consecutive defeats – where the team conceded 12 goals – against Parma F.C. and A.C. Siena.
The following year Osei was loaned to FC Politehnica Timișoara, with the Romanian club having an option to buy him at the end of the season. He was eventually released by Livorno and, after a brief spell in Germany with amateurs ASV Cham, returned to his country to play in the top level, representing in quick succession Wa All Stars and Liberty Professionals.
- Revolution sign Osei and await delivery; Boston.com, 1 April 2009
- Revolution adds African defender; NE Revolution's website, 31 March 2009
- Revs waive Osei; Revolution Soccer, 18 January 2011
- Midfielders Ansah, Osei join Hearts training; Ghana Soccernet, 14 November 2012
- Emmanuel Osei – FIFA competition record