Harro Knijff specialises in sports law, professional liability and employment law and and is a noted legal counsel to national football players and other sports professionals and sport associations. Harro also specialises in advising professional service firms and their partners in partnership disputes.

Recent work includes advising or assisting:

• Rabobank on the dismissal by Rabobank of the cyclist Mr Michael Rasmussen
• the Royal Dutch Football Association (KNVB)
• the formation of the Philips Swimming team (including multiple Olympic Gold Medallist Pieter van den Hoogeband)
• many football players regarding their transfers
• NOC*NSF with respect to the Olympic Games in Beijng.

Harro was the dean of the Bar of The Hague from 1998 to 2002.