Rado Riha (born 8 October 1948) is a Slovene philosopher. He is a senior research fellow and currently the head of the Institute of Philosophy, Centre for Scientific Research at the Slovenian Academy of Sciences and Arts, and coordinator of the philosophy module at the post-graduate study programme of the University of Nova Gorica.
Born in Ljubljana, former Yugoslavia, he studied philosophy at the University of Ljubljana. In the 1980s, he was part of what was known as the Ljubljana school of psychoanalysis. In the 1970s and 1980s, he was member of the League of Communists of Slovenia. He left the party in October 1988, together with 32 other left wing intellectuals, as a protest against the arrest by Yugoslav military intelligence of the dissident Janez Janša and three other journalists critical of the regime. During the so-called JBTZ trial in 1988, he was an active member of the Committee for the Defence of Human Rights, the largest non-Communist civil society platform in the Socialist Republic of Slovenia.
Riha's research topics include ethics, epistemology, contemporary French philosophy, the psychoanalysis of Jacques Lacan, and the philosophy of Immanuel Kant. From 1996 to 2003 he has been the editor-in-chief of the journal Filozofski vestnik, and since 1993 a member of its editorial board.
He is married to the philosopher Jelica Šumič Riha.