Paravoor Govindan Devarajan (Malayalam: പരവൂര്ഗോവിന്ദന്ദേവരാജന്), popularly known asG. Devarajan or Devarajan master, was a noted Malayalam music composer, died on March 14, 2006 in Chennai, at the age of 79.

He has scored music for more than three hundred Malayalam films, many dramas, twenty Tamiland four Kannada movies. Many of his compositions remain ever green classics in Malayalam. Besides, his music in the Tamil film 'Annai Velankanni' has received many accolades. Devarajan received Kerala Government's Best Music Director award for five times, among other honours.

The first movie for which he composed music was Kaalam Maarunnu (1955). He teamed up with poet-lyricist Vayalar Ramavarma inChathurangam in 1959. His third movie - and the second with Vayalar - Bharya (1962) became a huge hit and made them a popular combination. His captivating music earned him pride of place among those who had relentlessly strived to earn a dignified status for film songs. His combination with Vayalar produced the golden era of Malayalam film music. Devarajan is remembered by legendary singers in Malayalam like K. J. Yesudas and Jayachandran as their Godfather. In fact, it was the magical compositions by him that brought laurels to the main singers of that age.

Devarajan was the one who used maximum number of raaga's in Malayalam film music. His music embraced different styles with the Carnaticand Hindusthani melody lines meeting folk idioms and western harmony. Also, he is particularly noted for his remarkable ability to blend the words of the lyrics with the mood of the situation, in his film song compositions.

Most of his hit songs were written by Vayalar Ramavarma and the combination of Vayalar-Devarajan was synonymous with beautiful songs. The Vayalar-Devarajan combine proved the most successful team till the death of Vayalar in the mid 1970s. Hundreds of songs contributed by the team are still part of Malayalis' nostalgia. Apart from Vayalar, he has also given tunes to the lyrics by other eminent poets and song writers like O. N. V. Kurup, P. Bhaskaran etc.

The name Devarajan master is remembered by Malayalam music lovers all over the world as the composer of deva raagas - divine melodies.