For Shaman King fans new and old, there are a number of other anime like Shaman King that should be of interest to you. The following list ranks the best anime similar to Shaman King in story, theme, and style, with the order determined by votes from anime fans like you.
In Shaman King, Yoh Askura sets out to become the best shaman fighter and earn the title of Shaman King. At its core, Shaman King is an adventure and anime like The Law of Ueki, Soul Eater, and MÄR (Märchen Awakens Romance) are as well. For example, in MÄR, the adventures take place within a fairy-tale setting. Shaman King is fantasy, Soul Eater dark fantasy, and MÄR is supernatural. Other anime recommendations for Shaman King include D-Gray-man, Bleach, and the similarly popular Dragon Ball, which also features a young protagonist on a quest.
If there's an anime similar to Shaman King that's missing from the list, feel free to add it yourself and help the recommendations grow!