Truls Johannessen Wiel Graff (16 April 1851 – 1918) was a Norwegian county governor.
He was the youngest living son of captain Christian Fredrik Graff (1818–1893) and Cathrine Magdalene Bull Wiel.
In 1882 he married Benta Tomine Marie Cathrine Baastad.
[1] Their son Ragnvald Graff became a major and barrister.
This Norwegian biographical article related to a government official is a stub.