Ulla may refer to:
- Ulla, short for the name Ursula in German-speaking countries
- Ulla, short for the name Ulrika in Scandinavian countries
- Ulla, a common first name for women in Scandinavian countries. For example, as of June 7, 2010, The Population Information System of Finland lists 25,959 Ulla's, most born between 1940-1979 The Population Information System of Finland
- Ulla, an Asherite mentioned in 1 Chronicles 7:39 in the Hebrew Bible
- Ulla (Talmud), a rabbi mentioned in the Talmud
- Ulla (The Producers), a main character in Mel Brooks' film and musical The Producers
- Ulla, a sound made by the Martians in H. G. Wells' novel The War of the Worlds and its adaptations
- Ulla (instrument), a traditional Korean percussion instrument
- Ulla (river) in Galicia (Spain)
- Ulla, a part of Nohra, a municipality in the Weimarer Land district of Thuringia, Germany.
- Ulla, Norway, a small fishing community on the island of Haramsøy, Norway
- Unified Link-Layer API, a software interface for applications to interact with wireless adapters in a mobile terminal
- Ulla Lindström
- Ulla Strömstedt
- Ulla Winblad
- Ulla von Höpken
- Mount Ulla, a peak in the Asgard mountain range, Antarctica
- Mount Ulla Township, a community in Rowan County, North Carolina