Tideland Signal, sometimes referred to as Tidelands, was a privately held, Houston, Texas based manufacturer of marine navigational aids, with main offices in Lafayette, Louisiana, Vancouver, British Columbia, Canada, Burgess Hill, UK, Dubai, United Arab Emirates and Singapore. It was the manufacturer of the ML-300 lantern, widely used in lighthouses around the world for more than 50 years. In 2016, Tideland was acquired by Xylem. In 2020 it ceased operations.