Manikyakkallu promotional poster
|Directed by||M. Mohanan|
|Produced by||A. S. Gireesh Lal|
|Written by||M. Mohanan|
|Music by||M. Jayachandran|
|Editing by||Ranjan Abraham|
Manikiakkallu (Malayalam: മാണിക്യക്കല്ല്, Māṇikyakkallŭ ?) is a 2011 Malayalam drama film directed by M. Mohanan and starring Prithviraj and Samvrutha Sunil in the lead roles. The film is about a young teacher who arrives at a village school, who tries to make a definite change in student attitude.
The story happens in a government school that had a glorious past but is now on the verge of being shut down as there are fewer than 50 students enrolled there. The teachers have lost all hope about making a difference to the situation and are busy with their personal activities. Into this situation comes a young teacher (Pritiviraj) who makes a difference. The film has a happy ending. The film opened with highly positive reviews, and became a hit. The soundtrack of the movie was also interesting.
The movie is loosely based on the real life story  of the students and teachers of the Govt Brennan School, Thalassery. The school had recorded an all-time low with 100 per cent failure in the Secondary School Leaving Certificate (SSLC) examinations in 1997. But in 2000, three years after its cent per cent failure, the school recorded a 100 per cent victory, thanks to the hard work of the teachers and the students spearheaded by the then headmaster A. Sugunan. From then on, it has been an ascend step by step, with the cent per cent success story repeating often in both the high school and higher secondary levels.
- Prithviraj as Vinayachandran 
- Samvrutha Sunil as Chandni
- Nedumudi Venu as Head master (factom fose )
- Jagathy Sreekumar as karunan karikalkuzhi
- Salim Kumar as kunjraaman/thampuraan
- Saikumar as AEO
- Kottayam Nazeer
- Suresh Krishna
- Manikandan Pattambi
- Anoop Chandran
- P. Sreekumar
- Anil Murali as S.K
- K. P. A. C. Lalitha
- Bindu Panicker as Raakhi
- Ambika Mohan as Vinayachandran's mother(Sarojini teacher)
- "Success Story of Govt. Brennan School, Thalassery". The Hindu.
- "മാണിക്യകല്ല് ചിത്രീകരണം തുടങ്ങി" (in Malayalam). Malayalamcinemanews.com. Retrieved 2011-02-05.