Adalberto Siebens
| Personal information | |
|---|---|
| Nationality | Puerto Rican |
| Born | 20 October 1946 Guayanilla, Puerto Rico |
| Sport | |
| Sport | Boxing |
Adalberto Siebens (born 20 October 1946) is a Puerto Rican boxer. He competed in the men's light welterweight event at the 1968 Summer Olympics. At the 1968 Summer Olympics, he lost to Habib Galhia of Tunisia.