Surname Tučkus (Tučkus 
) , in all the world, is a very rare cognomen. The cognomen Tučkus is habitual in Northern Europe, particularly Lithuania, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Tučkus | Lithuania |
| vincas gražvydas tučkus LT (b. 1934) |
|