How I Met Your Mother (often abbreviated to HIMYM) is an American sitcom that originally aired on CBS from September 19, 2005 to March 31, 2014. The series follows the main character, Ted Mosby, and his group of friends in Manhattan. As a framing device, Ted, in the year 2030, recounts to his son and daughter the events that led him to meet their mother.

Who is the narrator on how i met your mother? Let's have some stream of consciousness first.
The relevant sentence in the passage is: The series follows the main character, Ted Mosby, and his group of friends in Manhattan. As a framing device, Ted, in the year 2030, recounts to his son and daughter the events that led him to meet their mother. So, the answer is Ted Mosby.