Riko (리코) is a retired South Korean singer. She is a former member of the girl group RaNia.

In 2011, she debuted as a member of RaNia in the group's original line-up, with the group's first mini album Teddy Riley, The First Expansion In Asia. After the release of Just Go in March 2013 she was absent from the group's activities, in May 2014 DR announced that Riko had left the group and that they were holding auditions for a new member, INGENIOMedia later retracted the statement by saying that they were not looking for new members and apologized for any confusion.

In late 2014, DR Music announced that Riko had decided to leave the group, releasing a statement saying: "After the completion of the promotions of the single "Style", Riko told us with that she would take her university entrance exams to study a career, she asked for a three year break to complete her university studies and once she graduated from college, she could return to the group as a member of RaNia, but the problem came back this year when she reproached subjects in the university, she made us aware of this situation and asked for a year more absence that we found impossible since although she promotes or not with the group, we as a company should continue paying a normal salary, And That is unfair for us and the other members of the group, because she can not postpone her absence anymore, she decided to leave the group and the agency."