E8 may refer to:
== Mathematics == E8, an exceptional simple Lie group with root lattice of rank 8 E8 lattice, special lattice in R8 E8 manifold, mathematical object with no smooth structure or topological triangulation E8 polytope, alternate name for the 421 semiregular (uniform) polytope Elementary abelian group of order 8
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).