[2][3] Sanal Kumar Sasidharan was born in Perumkadavila village, Thiruvananthapuram district, Kerala on 8 April 1977.

[4] He graduated in Zoology from VTM NSS College Dhanuvachapuram, Thiruvananthapuram and law, then started his job as a lawyer.

[6] In 2001, he formed a film society, Kazhcha Chalachithra Vedi[7] with his colleagues, for making independent movies through crowd funding.

[11] In 2001, he made his first short film Wonder World, with cinematography by Sunny Joseph, editing by Beena Paul and production by Kazhcha Chalachithra Vedi through crowd funding.

[15] The main actors, Nimisha Sajayan has received the Kerala State Film Award for Best Actress and actor Joju George has won the Kerala State Film Award for Best Character Actor and Kerala State Film Award – Special Mention for Direction and Sound design to Sanal Kumar Sasidharan.

[16] His sixth feature film project Ah'r (Kayattam), announced in 2019 has been noted for the presence of acclaimed Malayalam actress Manju Warrier as protagonist and a co-producer.

[20] He has made another feature film immediately after Kayattam with Tovino Thomas as hero titled, Vazhakku.

[22] Huge audience influx to watch Vazhakk caused the delegates to protest in front of the theatre alleging that many who had not reserved seats through prior online booking were allowed to attend the theatre [23] Sasidharan's 2017 film Sexy Durga, was renamed as S Durga following controversy of the original title which was banned by the Indian Central Board of Film Certification.