皮克斯动画工作室（英语：Pixar Animation Studios 英语发音：/ˈpɪksɑr/，香港译作“彼思动画制作室”），简称皮克斯（英语：PIXAR），是一家位于加州爱莫利维尔市的计算机动画制片厂。该公司也制作电脑三维软件，如用于影视效果制作并符合自家制定的RenderMan规范的三维渲染软件包——PRMan。皮克斯的前身是卢卡斯影业于1979年成立的的电脑动画部。1986年，苹果公司联合创始人史提夫·乔布斯收购了卢卡斯的电脑动画部，成立了皮克斯动画工作室。2006年，皮克斯被迪士尼以74亿美元收购，成为华特迪士尼公司的一部分，乔布斯亦因此成为迪士尼的最大个人股东。

Pixar is an American computer animation film studio based in Emeryville, California The studio is best known for its CGI animated feature films created with RenderMan, its own implementation of the industry-standard RenderMan image-rendering application programming interface used to generate high-quality images. Pixar began in 1979 as the Graphics Group, part of the computer division of Lucasfilm before its spin-out as a corporation in 1986 with funding by Apple Inc. co-founder Steve Jobs, who became its majority shareholder. The Walt Disney Company bought Pixar in 2006 at a valuation of $7.4 billion, a transaction that resulted in Jobs becoming Disney's largest single shareholder at the time. Luxo Jr., a character from the short film of the same name, is the mascot for the studio.