In Friends, what is the name of Monica Geller’s older brother?

In Friends, Monica Geller’s older brother is Ross Geller.

Ross is one of the six central characters and is played by David Schwimmer. He is introduced as Monica’s older sibling and becomes a paleontologist at the beginning of the series. His family relationship with Monica is a recurring part of the show, including their childhood competitiveness and their parents’ differing treatment of them.

Ross and Monica’s sibling history also explains several long-running jokes. Ross was often favored by their mother, Judy, while Monica felt overlooked. They share a close bond despite frequent arguments, and their family scenes commonly include their parents, Jack and Judy Geller.

Ross is also Rachel Green’s principal romantic counterpart and the father of Ben and Emma. Those relationships are separate from his role as Monica’s brother, which remains one of the show’s foundational character connections.