Liane Winter (born June 24, 1942) is a former West German long-distance runner, who is recognized by the International Association of Athletics Federations as having set a world best at the Boston Marathon on April 21, 1975 with a time of 2:42:24.
Winter, the first woman from outside the United States to win Boston, only briefly held the mark as her countrywoman, Christa Vahlensieck, turned in a 2:40:16 performance in Dülmen twelve days later.
Winter's 1975 performance at Boston was aided by a "25-mile-an-hour tailwind", after which she asked for a beer through her translator.
At the 1976 Boston Marathon, she finished in tenth place.