Josep Casadevall (born 10 September 1946) is an Andorran lawyer born in Spain and the judge of the European Court of Human Rights in respect of Andorra.

Casadevall was born on 10 September 1946 in Girona, a city in the northeast of Catalonia, Spain.

Casadevall graduated in law from the University of Madrid in 1978 and began practising in Andorra in 1980, becoming Secretary General of the Bar Association in 1984 and President in 1993.

From 1985 to 1998, he was Professor of Law in the Spanish National Open University.

[1] Casadevall has been the judge in respect of Andorra at the European Court of Human Rights, a non-permanent court enforcing the European Convention on Human Rights, since 1996.