Karl Braun
Karl Braun is the name of:

Karl Braun (politician, 1807), German jurist and politician
Karl Braun (politician, 1822) (1822–1893), German politician and writer
Karl Ferdinand Braun (1850–1918), German electrical engineer, inventor, physicist, and Nobel laureate
Karl Braun (actor)

See also
Carl Braun Camera-Werk, also known as Karl Braun KG