Katsuya Eda (江田 勝哉, Eda Katsuya) is a mathematician, currently a professor at Waseda University. His research centers on set theory and its applications, particularly in algebraic topology. He has done a great deal of work on the fundamental group of the Hawaiian earring and related subjects.

• Eda's home page at Waseda University Archived 2008-07-19 at the Wayback Machine