Samsung Galaxy S5 is an Android smartphone produced by Samsung Electronics, which serves as the immediate successor to 2013's Galaxy S4. Unveiled on 24 February 2014 at Mobile World Congress in Barcelona, Spain, it was released on April 11, 2014 in 150 countries.

As with the S4, the S5 is an evolution of the prior year's model, placing a particular emphasis on an improved build with a textured rear cover and IP67 certification for dust and water resistance, a more refined user experience, new security features such as a fingerprint reader and private mode, expanded health features (such as a built-in heart rate monitor), and an updated camera.

The Galaxy S5 received mixed, but mostly positive reviews; while praised for the improvements to its design, display, software, and camera, the S5 was panned for only providing modest design and hardware improvements over its predecessor.