Kristoffer Lou "Ryan" Gonzales Agoncillo (Tagalog pronunciation: [ɐgɔnˈsiljɔ]; born April 10, 1979) is a Filipino actor, model, host, musician, and photographer.

He has appeared in various television commercials for a variety of products such as Greenwich Pizza (together with Donita Rose), Sprite, Smart Communications, Emperador Brandy, Rexona, Swish mouthwash, and McDonald's.

[6] On October 24, 2009, Agoncillo finally returned to GMA Network and began hosting the country's longest running noontime show, Eat Bulaga!.

hosted by his wife Judy Ann Santos, marking his partial return to ABS-CBN despite his commitments to other networks.

He played the distinct roles of a grease-filled beggar and a transvestite in two separate dramatic episodes of Maalaala Mo Kaya, the biographical drama series of ABS-CBN.

He starred in the ABS-CBN television series, Ysabella with his long-time on-screen partner and then girlfriend, Judy Ann Santos.

[20] Agoncillo returned to acting again this time on GMA Network with My Husband's Lover as his very first television series on the network appearing in a minor role[21] (also in a last week of the drama series), with his co-stars Carla Abellana and Dennis Trillo in 2013, and in Ismol Family[22] from 2014 to 2016, also with Carla Abellana.

He published a black-and-white photography coffee table book titled Ploning – The Making as a birthday gift to his fiancée (now wife) Judy Ann Santos in 2008.

He competes in various drifting events with a Nissan Silvia (S13) sponsored by Adidas, Yellow Cab Pizza, Shell, and Nexen Tire.

He attended his tertiary education at De La Salle University, Manila campus and graduated with the degree of Bachelor of Arts in Organizational Communication.