Dorothy Little Happy

 is a solo unit originated in Sendai, Miyagi Prefecture, Tohoku, Japan. The unit belongs to the model talent agency Stepone, headquartered in Sendai as well, under the label Otodama Records.
After Kana Shirato graduated, the group became the solo project of Mari Takahashi. Mari graduated in December 2018 and the group has since been restarted with new members in 2019.