Ritva Kaija Hannele Melender (née Lemettinen, born 9 September 1960 in Ylistaro) is a retired female marathon runner from Finland.
She represented Finland at the 1992 Summer Olympics in Barcelona, Spain, finishing in 14th place in the women's marathon.
Her personal best time is 2:28:00 set at the London Marathon in 1995.
This is also the current Finnish national record.
This biographical article relating to Finnish athletics is a stub.