Lotti \l(ot)-ti\ as a girl's name is a variant of Carol (Old German), Charlotte (Old German) and Lottie, and the meaning of Lotti is "free man".
The baby name Lotti sounds like Lotte, Lotta and Lotty. Other similar baby names are Letty, Lettie, Netti, Atti, Betti, Tottie, Lottey, Dotty, Dottie, Etti, Lottee, Kitti, Lorri, Lori, Letta, Loni, Lonni, Lotie, Lotus, Matti and Patti.