Baltan (バルタン星人) is a race of alien creatures originally featured in the 1966 Japanese TV series Ultraman. Baltan's epithet is "Space Ninja" (宇宙忍者).
The Baltan aliens have been considered Ultraman's most popular foe. The race's trademark is their sinister laugh. A Baltan makes cameo appearances in a few Dr. Slump chapters, usually hanging on a tree.