Andy Rubin.
Android Inc. was founded by Andy Rubin, Rich Miner, Nick Sears, and Chris White in October 2003. However, it’s worth noting that Google acquired Android Inc. in August 2005, and Andy Rubin continued to lead the Android project at Google until 2013. So, depending on the context of your question, you could attribute the founding of Android to the original team at Android Inc. or recognize Google’s role in shaping and developing the Android operating system.