Olaf Trygve Dalseg was a Norwegian marketing agent.

He was born in Ringebu

Ringebu

is a municipality in Oppland county, Norway. It is part of the traditional region of Gudbrandsdal. The administrative centre of the municipality is the village of Vålebru.The municipality of Ringebu was established on 1 January 1838...

. He worked in Hjemmet

Hjemmet

Hjemmet, pronounced "yemmet" is a Norwegian weekly magazine, founded in 1911. Its target group is women 40 years and older . The magazine contains features, articles on food and interior decoration, and crosswords. Its circulation was 228,313 in 2004. The editor is Lise Hansen. It is owned by...

and Morgenbladet

Morgenbladet

Morgenbladet is a Norwegian weekly newspaper. It was founded in 1819 by the book printer Niels Wulfsberg, and was the country's first daily newspaper. For a long time, it was also the country's biggest newspaper. It was closed down by the German Wehrmacht during World War II...

before starting a career in marketing and advertising. His own marketing agency was named Dalseg Promotion. He was also affiliated with Institute of Marketing , and was an honorary member of Norwegian Association of Advertising Agencies who owned the Institute. He received an honorary medal from the Nordic association in 1956. Already in 1947 he was honored with the Royal Norwegian Order of St. Olav for his fundraising for Nasjonalhjelpen. He died in 1987.