Who founded Square?

Answer

About Square

Square was founded by Jack Dorsey.

Square was founded by Jack Dorsey (@jack on X). It launched in 2009. The product is in the E-commerce category on Startup Spotlight.

Source

This answer is drawn from the Square listing on Startup Spotlight, last updated May 20, 2026. For the full profile, see the Square listing.

Other questions about Square

• What is Square?

  Square is run your business and pay your team — anywhere.

• When was Square launched?

  Square launched in 2009.