Ryan Cayabyab (born Raymundo Cipriano Pujante Cayabyab but affectionately known as Mr. C) is a renowned Filipino musician and the current Executive and Artistic Director of the San Miguel Foundation for the Performing Arts. His works range from commissioned full-length ballets, theater musicals, choral pieces, a Mass set to unaccompanied chorus, and orchestral pieces, to commercial recordings of popular music, film scores and television specials.

Ryan was the first Filipino Grand Prize Winner in the 1st Metro Manila Popular Song Festival in 1977. He was recently under public eye during the second half of 2006 as resident judge for the first season of Philippine Idol.

Ryan Cayabyab was born on May 4, 1954 in Manila, Philippines. His mother died when he was only 6, and his father struggled to support him and his three other siblings. His mother's dying wish was that none of her children would pursue music as a profession, knowing how hard life is for a musician with meager earnings (she was an opera singer).

Thus, Cayabyab initially took up Bachelor of Science in Business Administration in the University of the Philippines, Diliman. But at the same time, he looked for a job in order to support his studies, and eventually landed with then-Senator Salvador Laurel as accompanist for the Development Bank of the Philippines (DBP) Chorale Ensemble. Noticing Cayabyab's exceptional talent on the piano, Laurel offered Cayabyab a scholarship which would allow Cayabyab to shift his course and pursue an education in music.

And so Cayabyab later graduated from the UP College of Music earning a Bachelor of Music, Major in Composition degree. After that, he became a full time professor for the Department of Composition and Music Theory in the UP Diliman for almost two decades.

Cayabyab is married to Emmy Punsalan and has a daughter, Cristina Maria, and a son, Antonio Maria. They reside in Quezon City, Philippines. In the late 1990s, Cayabyab was about to bring his family and migrate abroad, but when offered by Danding Cojuangco (President of the San Miguel Corporation) a command post that would give him full access in producing and performing new music that would bring forth a fresh wave to the Philippine music scene, Cayabyab accepted the offer. Today he is currently in his 7th year as Executive and Artistic Director of the San Miguel Foundation for the Performing Arts.

As music director, conductor and accompanist, he has performed with leading Philippine music personalities at Avery Fisher Hall in the Lincoln Center in New York City; Carnegie Hall (both the Main and Recital halls) in New York; the Kennedy Center and the Washington Convention Center in Washington, D.C.; the Shrine in Los Angeles; the Orpheum in Vancouver; even at the Circus Maximus of the Caesar's Palace in Las Vegas.

He has traveled as music director in most of the Southeast Asian cities, in the cities of Australia as well as in Germany, France, Spain, The Netherlands, Japan and the United States. He has worked in the same shows with Sammy Davis Jr. and Frank Sinatra, as well as conducted the Philippine Philharmonic Orchestra for special performances of American jazz singer Dianne Schuur and pianist Jim Chappel.

He has performed as music director in command performances for King Hasan II in Rabat, Morocco, King Juan Carlos and Queen Sophia of Spain in Manila, King Fahd of Saudi Arabia in Tangiers, Queen Beatrix at the Noordeinde Palace in The Netherlands, and U.S. President Bill Clinton in Boston, Massachusetts.

In Manila, he has conducted the Philippine Philharmonic Orchestra at the Cultural Center of the Philippines for a concert of Philippine and American contemporary music; and the Manila Chamber Orchestra for a concert of his original works.