The two victims were in Gould Hall, where authorities responded at about 9 a.m. to reports of shots being fired, according to Seattle Fire Department spokeswoman Helen Fitzpatrick.
KOMO-TV reported that a woman and a man were shot to death.
Gould Hall, built in 1972, is the university's architecture building. It houses three departmental offices, a dean's office, a library, shop, lab, computer facilities and classrooms, according to the university's Web site.
The choice of the city of Helsinki is not incidental as the capital of Finland had hosted US-Soviet negotiations on the limitation of nuclear stockpiles in 1969