* The Old Man of the Mountain (also known as the "Great Stone Face") was a rock formation in New Hampshire, USA. It famously resembled a human face. Unfortunately, it collapsed in 2003.
* The Sphinx, located in Giza, Egypt, is a massive limestone statue with a human head and lion's body. Although it is not technically a mountain, it is carved into a rocky outcrop.
* Mount Rushmore, located in South Dakota, USA, is a mountain carved with the faces of four US presidents.
* The "Face on Mars", is a feature on Mars that was once thought to resemble a human face. This was later shown to be a result of the way shadows fell on the rock formation, not an actual face.
So, depending on what you're looking for, there are a few different mountains with "faces" you could consider!