"The conclusion of the arrangement will enable each company thereafter to chart its own growth trajectory independently in one of the most dynamic, complex and fast growing markets in the world," the two firms said in a joint statement.
In a filing to the BSE, TV18 Broadcast, which operates English news channel CNN IBN, said the company and CNN "will be successfully concluding their ten-year brand licensing and news services arrangement for use of the CNN brand and CNN news content in January 2016".
In 2005, Global Broadcast News (GBN), a TV18 group company, had signed a branding agreement with CNN Turner International leading to the launch of English news channel CNN IBN in India.
Later on, GBN became IBN18 Broadcast Ltd, which in turn became TV18 Broadcast Ltd.
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The 10 year partnership comes to an end in October but the co-branding agreement will continue till January 2016, sources said.
The companies, however, did not specify the reasons for not renewing their contract.
CNN International Chief Commercial Officer Rani Raad said in the decade long partnership with TV18, CNN IBN was a "pioneering initiative".
It is speculated that CNN may tie up with another Indian media house Zee group. Comments from the group, however, could not be immediately obtained.
TV18 Broadcast Ltd shares ended the day at Rs 36.30 per scrip on BSE, down 3.46 per cent from the previous close.