Kin (often stylized as KIN) is the name of a family of phones from Microsoft. They are part of the larger Windows Phone (Windows Phone 7) family.cite web url=title=Microsoft Kin One and Two review author=Joshua Topolsky date=5 May 2010 publisher=Engadget On April 12, 2010, Microsoft announced two Kin models, both available online on May 6, 2010 and in stores on May 13, 2010 exclusively from Verizon Wireless for the U.S.; the phones are for release in autumn of 2010 on Vodafone for Europe. The Microsoft-designed phones are manufactured by Sharp (Sharp Corporation). The new Kin platform is aimed at users of social networking. Microsoft described the phones target demographic as men and women between the ages of 15 and 30.

The Kin platform was heavily influenced by Microsofts acquisition of Danger (Danger (company)), which built the Danger Hiptop/T-Mobile Sidekick, and its architecture has been described as a family of mobile devices running a bespoke (Custom software) operating system as part of a client-server system that is then licenced to mobile carriers. The Kin is based on Windows CE and is distinct from Microsofts Windows Mobile and Windows Phone 7 platforms.