Of Germanic origin.
Ulli is a diminutive form of the masculine name Ulrich and of the feminine name Ulrike.
It means “wealthy and powerful ruler”.
Alternative forms are: Ueli, Ulrik, Ulric, Ulrika, Ulla.
Famous male bearers are Ulli Lommel, Ulli Ackermann, Ulli Kinalzik.
One characteristic bearer of the name is German actor and director Ulli Lommel.
According to imdb.com, Ulli Lommel is ” widely known for his frequent collaborations with Rainer Werner Fassbinder, a creative partnership which lasted 10 years and produced over 20 films, Ulli Lommel is one of the most consistently creative filmmakers to come from the New German Cinema movement”.
Lommel also worked with Andy Warhol at “The Factory”.