Telelogic AB was a software business headquartered in Malmö, Sweden. Telelogic was founded in 1983 as a research and development arm of Televerket, the Swedish department of telecom (now part of TeliaSonera). It was later acquired by IBM Rational, and exists under the IBM software group.
Telelogic had operations in 22 countries and had been publicly traded since 1999. On June 11, 2007, IBM announced that it had made a cash offer to acquire Telelogic. On August 29, 2007, the European Union opened an investigation  into the acquisition. On March 5, 2008, European regulators approved the acquisition of Telelogic by the Swedish IBM subsidiary Watchtower AB. On April 28, 2008, IBM completed its purchase of Telelogic.