SL-11

SL-11 may refer to:


 * Schütte-Lanz SL 11, a German military dirigible
 * Karosa ŠL 11, a Czech intercity bus, produced from 1970-1981
 * Tsyklon-2, a Soviet and Russian rocket, used from 1969-2006
 * Tsyklon, a Soviet rocket, used from 1967-1969