This talk is based on the work of ref. [1]. Within a non‐linear chiral Lagrangian framework, the mass spectrum ofI= 0 scalar mesons below 2 GeV [&sgr;(550),f0(980),f0(1370),f0(1500) andf0(1710)] is studied, and some speculations on the internal structure of these states is presented. The scalar glueball mass is estimated in the range 1.47–1.64 GeV. © 2003 American Institute of Physics