Tröma Nakmo (Skt. Krodhakālī; Tib. ཁྲོ་མ་ནག་མོ་, Wyl. khro ma nag mo) — a form of Vajrayogini.
A famous practice of Tröma Nakmo was revealed by Nyang Ral Nyima Özer. In more recent times, Dudjom Lingpa has also revealed a practice of Tröma Nakmo which has become very popular.