Thattil Antony Johnson (26 March 1953 – 18 August 2011), popularly known as Johnson Master, was an Indian film score composer and music director. Regarded as one of the finest composers in the industry, he was noted for his lyrical and expressive melodies together with simple but rich tonal compositions of thematic music. Johnson is a recipient of National Film Awards twice and Kerala State Film Awards five times. He has composed music for more than 300 Malayalam films, the most by any composer except for G. Devarajan. He was the first music director from Malayalam cinema to be honoured with the National film Awards.He composed music for some of the most important motion pictures of Malayalam cinema, including Koodevide, Namukku Paarkkan Munthiri Thoppukal, Oru Minnaminunginte Nurunguvettam, Vadakkunokkiyantram, Perumthachan, Njan Gandharvan, Ponthan Mada, and Bhoothakkannadi.

Johnson was born in Nellikkunnu near Trichur (Thrissur) in the state of Travancore-Cochin (now part of Kerala), on 26 March 1953. His father, the late Thattil Antony, was a bank employee. His secondary education was at St. Thomas School in Thope, Trichur. Johnson was a singer in the choir of Nellikkunnu St. Sebastian's Church. He used to sing in youth festivals and musical shows and joined the orchestra team of some local troupes and played harmonium in many concerts. He also used to sing in female voice in ganamelas (a stage show where film songs are sung by amateur or professional artists).

Within a few years, the club became one of the most sought after musical troupes in Kerala, and had more than fifty members. This club used to give accompaniment music to playback singers Jayachandran and Madhuri in their musical shows. It was Jayachandran who introduced Johnson to G. Devarajan, one of the most prolific composers of South Indian cinema then. Devarajan literally adopted Johnson and brought him to Chennai in 1974. Johnson bought an accordion, during this period, from R. K. Shekhar (A. R. Rahman's father), and began assisting Devarajan in filmscoring and composing.

Johnson began his independent career by composing the film scores of Bharathan's Aaravam (1978), Thakara (1980) and Chamaram (1980). He composed his first soundtracks for the film Inaye Thedi, debut film of director turned still photographer Antony Eastman and actress Silk Smitha. It was Devarajan himself, who suggested Johnson try his hand at direction. Then came Bharathan's Parvathi and Balachandra Menon's Premageethangal. Premageethangal was a notable success with four of its songs – "Swapnam Verumoru Swapnam", "Nee Nirayoo Jeevanil", "Muthum Mudipponnum" and "Kalakalamozhi" attaining cult status.

He came to prominence through his collaboration with Malayalam author and director Padmarajan. Koodevide was their first venture, which had one of the most famous songs of Johnson "Aadivaa Kaatte", a pathbreaking song in Malayalam music history. It was one of the first songs in Malayalam to so many western classical elements. The song was born out of Padmarajan's need for a western song for his innovative film. Song composition took place in Woodland's Hotel, Chennai. Another notable feature of this song was the lyrics by O. N. V. Kurup, who for the first time wrote lyrics for a pre-composed song. Johnson worked for 11 films with Padmarajan, including his last film Njan Gandharvan. This productive collaboration saw the detailed screenplay and cinematography of Padmarajan become a fertile ground for expressive musical narration and thematic scores for Johnson. This is seen in some of the greatest motion pictures of Malayalam cinema, like Nombarathipoovu (1987). Another notable collaboration of Johnson was with director Sathyan Anthikkad, with whom he associated in almost 25 films. He was able to provide some of his most popular songs with Anthikkad and this combo is widely accepted to be one of the greatest director-composer collaborations in Malayalam cinema. Acclaimed Malayalam director Bharathan also collaborated with him in multiple films including Parvathy, Palangal, Ormakkayi, Kattathe Kilikkoodu, Ente Upasana, Oru Minnaminunginte Nurunguvettam, Ozhivukalam, Malootty, Chamayam and Churam. His major other collaborations with directors include Mohan (Oru Katha Oru Nunakkatha, Sakshyam, Pakshe and Angane Oru Avadhikkalathu), Sibi Malayil (Kireedam, Chenkol, Dasaratham and Nee Varuvolam), Sreenivasan (Vadakkunokkiyantram and Chinthavishtayaya Shyamala), Lohithadas (Bhoothakkannadi, Kamal (Peruvannapurathe Visheshangal, Shubhayathra, Ee Puzhayum Kadannu and Paavam Paavam Rajakumaran), and Balachandra Menon (Shesham Kazhchayil, Premageethangal, Kilukilukkam, Kelkatha Shabdam and Nayam Vyakthamakkunnu).

He is also noted for his collaboration with the Malayalam lyricist Kaithapram Damodaran Namboothiri. Their association began in 1989 with Sathyan Anthikkad's social satire Varavelpu. Most of Johnson's notable works were in the late eighties and early nineties. In 1991, he scored a record number of 31 films, including 29 with Kaithapram. Johnson won National awards for two consecutive years. He won his first National Award for best music direction for the motion picture Ponthan Mada (1993). The next year he got his second National award for Sukrutham for the background score.

After an extremely successful career of more than a decade, Johnson took a sabbatical from film scoring by the end of the nineties. The quantity of his works began perishing during this time. By the beginning of the 2000s, he didn't sign any new projects that even his most noted collaborator Sathyan Anthikkad had to find a new composer. In 2003 he did the background score for the NFDC movie Parinamam (The Change) directed by P. Venu.In 2004, he sang the song "Theekuruvi" from Kangalal Kaidhu Sei, which was composed by A. R. Rahman. Perhaps it is the only song recorded by him for any composer other than himself. He returned strongly to the field with Photographer in 2006, which fetched him numerous awards.

Johnson has released four non-film albums. His first album Sneha Deepika was released in 1989 on Tharangini audios. It had nine Christian devotional songs – "Aathma Swaroopa", "Unni Yesu Pirannu", "Manninum Poovinum", "Thumbapoo Polulla", "Bhoomikku Pulakam", "Manassakumengil", "Kulir Choodum", "Arthungal Innoru" and "Vidarnna Punchiri". The featured artists were K. J. Yesudas, K. S. Chithra and Sujatha. His second album Onathappan, a collaboration with M. G. Radhakrishnan and Berny-Ignatius, consisted of nine festival songs. The track "Mundon Paadam" was composed by Johnson, sung by M. G. Sreekumar and had lyrics penned by Bichu Thirumala. His third album Nannipoorvam Johnson, consisted of twelve tracks – "Chandanakkavilinnu", "Panineeru Peyyum", "Vasundhare", "Virunnu Vanna", "Prapanjam Sundaram", "Enthe Nee Varathe", "Nilasandhyayil", "Veruthe Onnu", "Ponnazhikkuttu", "Pranayappirave", "Kalindhi", and an introductory speech by Sreenivasan. The lyricists were R. K. Damodaran, Gireesh Puthenchery, Kaithapram, Bichu Thirumala, M. D. Rajendran, K. Jayakumar, S. Ramesan Nair and Poovachal Khader and the songs were rendered by K. J. Yesudas, P. Jayachandran, K. S. Chithra, M. G. Sreekumar, Aparna Rajeev, Dr. Rashmi Madhu and Johnson himself. In 2009, he released his second Christian devotional album entitled Parishudhan. It had eleven tracks – "Vazhiyum Sathyavum Nee Thanne (Vijay Yesudas), "Mullukal Kuthi" (Chithra), "Ariyathe Polum" (G. Venugopal), "Neethimanayavane" (Sujatha), "Traditional song" (Louis), "Mazhayum Veyilum" (Rimi Tomy), "Oru Viral Sparshathal (Sudheep), "Loka Palaka" (Chithra), Neethanthamam (Vijay Yesudas), and "Kannukalil Theliyum" (Manjari).