Relativistic distorted-wave collision strengths have been calculated for all possible Δn=0 transitions, where n denotes the valence shell of the ground level, in the 67 Li-like, F-like and Na-like ions with Z in the range e8b5" title="Click to view the MathML source">26≤Z≤92. This choice produces 3 transitions with e8ee4625f36e54565dd906724a" title="Click to view the MathML source">n=2 in the Li-like and F-like ions, and 10 transitions with e8aa321e77e9bbba8e1aaa" title="Click to view the MathML source">n=3 in the Na-like ions. For the Li-like and F-like ions, the calculations were made for the six final, or scattered, electron energies a34eb2786e054ed508bc" title="Click to view the MathML source">E′=0.008,0.04,0.10,0.21,0.41, and 0.75, where 82ca" title="Click to view the MathML source">E′ is in units of 8b56"> Ry with e57334e77c9f9054b5f8826ccda56"> for Li-like ions and for F-like ions. For the Na-like ions, the calculations were made for the six final electron energies E′=0.0025,0.015,0.04,0.10,0.21, and 0.40, with . In the present calculations, an improved “top-up” method, which employs relativistic plane waves, was used to obtain the high partial-wave contribution for each transition, in contrast to the partial-relativistic Coulomb–Bethe approximation used in previous works by Zhang, Sampson and Fontes [H.L. Zhang, D.H. Sampson, C.J. Fontes, At. Data Nucl. Data Tables 44 (1990) 31; H.L. Zhang, D.H. Sampson, C.J. Fontes, At. Data Nucl. Data Tables 48 (1991) 25; D.H. Sampson, H.L. Zhang, C.J. Fontes, At. Data Nucl. Data Tables 44 (1990) 209]. In those previous works, collision strengths were also provided for Li-, F- and Na-like ions, but for a more comprehensive set of transitions. The collision strengths covered in the present work should be more accurate than the corresponding data given in those previous works and are presented here to replace those earlier results.