Willi Becker (January 11, 1918 in Wallmenroth – January 25, 1977 in Düsseldorf) was a German politician, representative of the Social Democratic Party.
After the sudden death of Georg Glock as Lord Mayor of Düsseldorf in December 1959 Becker was determined by his party's successor in January 1960.
At the next regular municipal election in March 1961, the CDU strongest faction in the city council was again, and Becker handed the office of the Mayor of Fritz Vomfelde.
From 1966 to 1970 Becker was also a member of the North Rhine-Westphalian State Parliament.
On January 25 of 1977 due to a serious illness Willi Becker committed suicide.