Cross-sections for (n, 2n) reactions have been measured on stannum isotopes at the neutron energies of 13.5 to 14.6 MeV using the activation technique. Data are reported for the following reactions: ¹¹²Sn(n, 2n)¹¹¹Sn, ¹¹⁸Sn(n, 2n)¹¹⁷Sn and ¹²⁴Sn(n, 2n)^123mSn. The neutron fluences were determined using the monitor reaction ⁹³Nb(n, 2n)^92mNb or ²⁷Al(n, α)²⁴Na. The results of present work were compared with data published previously.