Nuclear spectroscopic information for known nuclides of mass number 131 (Cd,In,Sn,Sb,Te,I,Xe,Cs,Ba,La,Ce,Pr,Nd,Pm,Sm,Eu) with Z = 49 to 63 and N = 82 to 68 have been evaluated and presented together with adopted energies and Jπ of levels in these nuclei. No excited-state data are yet available for ¹³¹ Cd, ¹³¹ Sm and ¹³¹ Eu. Fairly rich structures are known in all other A = 131 nuclides. Superdeformed and highly-deformed structures are known in ¹³¹ Ce (two SD bands) and in ¹³¹ Pr (two HD bands). This evaluation represents a complete update of previous evaluations of A = 131 by Yu.V. Sergeenkov, Yu.L. Khazov, T.W. Burrows, M.R. Bhat (1994Se10).