Mikko \m(ik)-ko\ as a girl's name is a variant of Miki (Japanese, Hawaiian), and the meaning of Mikko is "three trees together; quick, nimble".
The baby name Mikko sounds like Mikki, Mika, Maeko and Micki. Other similar baby names are Aiko, Ekko, Milka, Rikky, Rikki, Rikke, Kiko, Kioko, Milke, Mirka, Niko, Nikky, Nikki, Vikky and Vikki.