Radio Factory RET (Estonian: Raadio-Elektrotehnika Tehas, abbreviated RET) was an electronics factory in Tallinn, Estonia.^[1]

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RET was established in 1935. In 1940, the factory was named to "Punane RET" ('Red RET').^[1]

During Soviet Estonia, the factory produced military products and high-class radio devices (Estonian: stereoradioola) called "Estonia".^[1]

In 1993, the factory was closed.^[1]