Meaning and Name Origin
Lotte \l(ot)-te\ as a girls' name. The name Lotte means "free man; God is my oath". Lotte is a form of Carol (Old German). Lotte is also a variant of Charlotte (Old German). Lotte is also used as a form of Elizabeth (Hebrew) and Lottie.
Lotte has 26 different forms via Carol, Charlotte, Elizabeth, Lottie: Bett, Betta, Bette▼, Betti, Bettie▼, Betty▼, Bettye▼, Liese, Lise, Lisette▼, Lizette▼, Lola▲, Loleta, Loletta, Lolita▼, Lolotte, Lotie, Lotta, Lottchen, Lottey, Lotti, Lotty, Lyse, Lyzette, Tetty and Tottie.
Lotte is an unusual given name for women. Lotte is an equivalently unusual last name too for all people. (2000 U.S. Census)
Below is a graphed analysis of the usage of Lotte and associated names. Popular varying forms of Lotte (#unlisted) are Bette, Bettie, Betty, Bettye, Carol, Charlotte (#10 the previous year), Elizabeth (#14), Lise, Lisette, Lizette, Lola (#236), Lolita, Lotta and Lottie. These girl names reached the top of their popularity during 1920-1929 and have become significantly less popular since, with forms such as Carol, Lisette, Lizette, Lolita and Lottie becoming somewhat outmoded. Charlotte (#10) and Lola (#236) are two of the more fashionable birth names here, with both names going through a revival in popularity. (Top 1000 Baby Names Records, 2014)