Patient X is a 2009 Filipino-language Horror Thriller movie written by Yam Laranas and Aloy Adlawan. The movie is directed by Yam Laranas and produced by Vic Del Rosario Jr., Annette Gozon Abrogar, Richard Gutierrez and Yam Laranas under the banner of GMA Films in collaboration with Viva Films and RGUTZ Productions. After twenty years, local police captures the murderer of the older brother of a young boy. Now a doctor.. Patient x features Richard Gutierrez in the lead role along with an ensemble cast including Cristine Reyes, Tj Trinidad, Miriam Quiambao, Nanding Josef, Elvis Gutierrez and Dion Ignacio. The screenplay is written by Yam Laranas and Aloy Adlawan. The music was composed by Nani Naguit. Cinematography was done by Yam Laranas and editing by Chuck Gutierrez. The film has a running time of 92 minutes. It was released on 28th October 2009 in Filipino and English languages. The film made a box office gross of ₱24 million. Distribution rights for the motion picture were acquired by GMA Films.

After twenty years, local police captures the murderer of the older brother of a young boy.