VSL

VSL may refer to:
 * VSL International, Swiss construction firm
 * Value of a Statistical Life, or simply Value of life
 * Variable speed of light, a theory in physics
 * Venezuelan Summer League, a defunct Minor League Baseball rookie league in Venezuela
 * Vernon Systems Ltd, a museums collections management software company based in New Zealand
 * Videsh Sanchar Nigam Limited, a company with NYSE stock ticker symbol VSL
 * Vienna Summer of Logic, a combination of several major conferences and more than 70 workshops on mathematical logic which took place in July 2014
 * Vienna Symphonic Library, a library of musical instrument samples
 * Ville Saint-Laurent, a former city that became a borough of Montreal in 2002
 * Volume of Sacred Law, in Freemasonry
 * Vorspann System Losinger, an international post-tensioning specialist contractor owned by Bouygues