Jakob Nielsen

Jacob or Jakob Nielsen may refer to:

Jacob Nielsen, Count of Halland (died c. 1309), great grandson of Valdemar II of Denmark
, Norway (1768-1822)
Jakob Nielsen (mathematician) (1890Ã¢ÂÂ1959), Danish mathematician known for work on automorphisms of surfaces
Jakob Nielsen (usability consultant) (born 1957), Danish web usability consultant
Jakob Axel Nielsen (born 1967), Danish lawyer and politician
Jakob Nielsen (actor) (1900-1978)
Jacob Nielsen (cyclist) (born 1978), Danish cyclist
Jakob Ahlmann Nielsen (born 1991), Danish footballer