谷歌地球（Google Earth，GE）是一款Google公司开发的虚拟地球仪软件，它把卫星照片、航空照相和GIS布置在一个地球的三维模型上。Google Earth于2005年向全球推出，被“PC 世界杂志”评为2005年全球100种最佳新产品之一。用户们可以通过一个下载到自己电脑上的客户端软件，免费浏览全球各地的高清晰度卫星图片。Google地球分为免费版与专业版两种。
Fly around the planet with a swipe of your finger with Google Earth for iPhone, iPad, and iPod touch. Explore distant lands or reacquaint yourself with your childhood home. Search for cities, places, and businesses. Browse layers including roads, borders, places, photos and more. See the world at street level with integrated Street View.
Use the “tour guide” to easily discover exciting new places to explore. With a quick swipe on the tab at the bottom of the screen, you can bring up a selection of virtual tours from around the globe.
With 3D imagery, you can now fly through complete 3D recreations of select cities, including San Francisco, Boston, Rome, and others. With every building modeled in 3D, you truly get a sense of flying above the city.