title: Joseph Callens
text: # Joseph Callens
  
  Joseph Maria Leo Callens (22 February 1904 – 8 April 1979) was a Belgian freestyle swimmer and diver. He competed at the 1920 Summer Olympics in the 3 meter springboard and at the 1924 Summer Olympics in the 4 × 200 m freestyle relay, but failed to reach the finals.
  
  