| Ubbo Janssen Albertsen | |
| Birth Date: | 23 May 1845 |
| Birth Place: | Germany |
| Office: | Illinois Senate |
| Term Start: | 1901 |
| Term End: | 1905 |
| Office2: | Illinois House of Representatives |
| Term Start2: | 1899 |
| Term End2: | 1901 |
| Party: | Republican |
Ubbo Janssen Albertsen (May 23, 1845 - November 25, 1926) was an American politician and businessman.
Albertsen was born in Germany. In 1856, Albertsen emigrated with his parents to the United States and settled in Pekin, Illinois. He was involved in the manufacturing business. Albertsen served in the Illinois National Guard. Albertsen served on the Pekin City Council. He also served on the Pekin Community High School Board. He was a Republican. Albertsen served in the Illinois House of Representatives from 1899 to 1901 and hen serve in the Illinois Senate from 1901 to 1905. Albertsen died at his home in Pekin, Illinois.[1] [2]