Tizen（又名泰泽），一款基于开放源代码的行动操作系统，采用Linux核心和WebKit运行，设备包括智能型手机、平板电脑、智能手表、手提电脑、车载消息娱乐设备（IVI）和智能电视。该专案由Linux基金会以及LiMo基金会合力推出，目的在于取代MeeGo与LiMo平台，参与开发的厂商有英特尔、三星、富士通、华为、NEC、KT（韩国通信）、NTT DoCoMo、Orange（法国电信）、Panasonic、SK、Sprint、Vodafone等。Tizen的开发者希望能够强化HTML5的应用。

Tizen (/ˈtaɪzɛn/) is an operating system based on the Linux kernel and the GNU C Library implementing the Linux API. It targets a very wide range of devices including smartphones, tablets, in-vehicle infotainment (IVI) devices, smart TVs, PCs, smart cameras, wearable computing (such as smartwatches), Blu-ray players, printers and smart home appliances (such as refrigerators, lighting, washing machines, air conditioners, ovens/microwaves and a robotic vacuum cleaner). Its purpose is to offer a consistent user experience across devices. Tizen is a project within the Linux Foundation and is governed by a Technical Steering Group (TSG) composed of Samsung and Intel among others.