Willi Koslowski

Infobox Football biography
playername = Willi Koslowski
fullname = Willi Koslowski
nickname = Der Schwatte
dateofbirth = birth date and age|1937|2|17
cityofbirth = Gelsenkirchen
countryofbirth = Germany
dateofdeath =
height =
position = striker
youthyears =
youthclubs = Buer 07
FC Schalke 04
years = 1957-1963
1963-1965
1965-196?
clubs = FC Schalke 04 ^{OL West}
FC Schalke 04 ^Bundesliga
Rot-Weiss Essen
caps(goals) =
39 (12)
25 (2)
nationalyears = 1962
nationalteam = West Germany
nationalcaps(goals) = 3 (1)

Willi Koslowski (born February 17, 1937) is a former German football player.

Striker Koslowski scored his only goal in his games for West Germany on the day of his debut, the third one of the West Germans in a 3-0 win over Uruguay in April 1962. He added two further appearances, one at the 1962 FIFA World Cup against Switzerland (2-1) at Estadio Nacional de Chile on June 3, the same year.