Thirteen carbazole alkaloids were isolated from Murraya euchrestifolia HAYATA (Rutaceae) collected in Taiwan. Four of them are novel carbazolequinones [murrayaquinone-A (7), -B (8), -C (9), and -D (10)], isolated for the first time from natural sources. Three of others are new alkaloids having the normal carbazole nucleus [murrayafoline-A (1), -B (2), and (+)-murrayazoline (11)]. These structures were elucidated from spectral data and chemical transformations.