SoS

SoS can refer to:


 * Scotland on Sunday, a Scottish weekly newspaper.
 * Scrum of scrums, a technique to operate scrum at scale. Scrum is a framework within project management for developing, delivering, and sustaining products in a complex environment.
 * Son Of Sardaar, a 2012 Indian film.
 * "Secret of success", a colloquial phrase with varied interpretations across cultures.
 * System of Systems, systems that pool their resources and capabilities together to create a new, more complex system.