|Headquarters||London, United Kingdom|
|No. of offices||8|
|No. of lawyers||500+|
|Major practice areas||General practice|
|Key people||David Stewart (CEO)
Mark Devereux (Senior Partner)
|Date founded||1981 (London)|
Olswang is an international law firm headquartered in London, United Kingdom and with additional offices in Reading, Berlin, Brussels, Madrid, Paris, Singapore  and most recently Munich. It also works closely with a network of firms across eighty countries. The Lawyer ranked the firm 22nd largest in the UK by worldwide turnover in 2010. That year, the firm had over 600 staff, including 97 partners. David Stewart is the firm's chief executive.
The firm's main practice areas include media, technology, telecommunications, real estate, corporate, intellectual property, commercial litigation and arbitration, finance, leisure, tax, EU and competition, and employment.
Olswang was founded in 1981 by Simon Olswang, Hassan Abbas and Mark Devereux, who is now the firm's senior partner. as a breakaway from property law firm Brecher & Co. Its early reputation was primarily based on film and media work. The firm grew rapidly through the 1990s, developing more of a focus on technology as well as media. In common with other professional service firms, Olswang converted to a limited liability partnership status under English law with effect from May 1, 2009.
- Commercial Litigation & Arbitration
- EU & Competition
- Intellectual Property (IP)
- Life Sciences
- Real Estate
- "Olswang opens in Paris with partner hires from Dechert and local firm". Legalweek. Retrieved 2011-08-25.
- "Olswang gears up for Singapore launch". Legalweek. Retrieved 2011-09-09.
- Byrne, Matt. "Olswang opens Munich IP office | News". The Lawyer. Retrieved 2011-08-25.
- Joanne Harris (2011-08-11). "Olswang". Thelawyer.com. Retrieved 2011-08-25.
- "The Lawyer". The Lawyer. Retrieved 2011-10-09.
- Byrne, Matt (2010-03-10). "Olswang elections end with Stewart as CEO | News". The Lawyer. Retrieved 2011-08-25.
- "Mark Devereux | MediaGuardian 100 2010 | Media". London: The Guardian. 2010-07-16. Retrieved 2011-08-25.
- "Firms - Chambers Partners - Olswang". Chambersandpartners.com. 2011-04-01. Retrieved 2011-08-25.
- "Olswang LLP | Key Facts". Olswang.com. 2009-05-01. Retrieved 2011-08-25.
- "Starting out strong - partners who founded their own firms". Legalweek. 2011-09-29. Retrieved 2011-10-09.
- Official website
- Olswang companies grouped at OpenCorporates
- Olswang's rankings in Chambers UK, Chambers Europe and the Chambers Student Guide