Konstantinos Nikolopoulos

Konstantinos Nikolopoulos may refer to:

 Konstantinos Nikolopoulos (composer) (1786–1841), Greek composer
 Konstantinos Nikolopoulos (fencer) (born 1890), Greek Olympic fencer
 Konstantinos Nikolopoulos (politician), mayor of Athens, 1951–1955
 Konstantinos Nikolopoulos (footballer) (born 1993), Greek footballer
 Konstantinos Nikolopoulos (water polo), Greek Olympic water polo player
Konstantinos Nikolopoulos (neuroscientist), 2019 laureate in Blavatnik Awards