The WTA Hamburg was a women's tennis event that was held from 1982 to 1983 (in Hittfeld) and again from 1987 through to 2002 and was part of the WTA Tour. It existed under several different sponsored names but was most commonly known as the Citizen Cup (1987–1995) or the Betty Barclay Cup (1999–2002). It was held in Hamburg, Germany and was played on outdoor clay courts.
It existed as a lower tier tournament in the first five years of its run but in 1990 was promoted to Tier II status which it maintained for the rest of its run. Steffi Graf holds the record for the most wins at the event, winning it six times consecutively from 1987–1992. She also finished runner-up a further two times.