Sinha's exit follows other recent top level exits from the asset management company.
Earlier this year, Chief Marketing Officer Mohit Sachdev, currently CEO at SREI MF Asset Management, had quit.
Anish Shah, who was vice president for finance and operations, had also left L&T Mutual Fund last year to join Deutsche Bank.
Sinha, who is widely quoted in Indian media, and L&T Mutual Fund, both declined to comment.
Sinha previously headed DBS Cholamandalam AMC, which was acquired by L&T Finance in September 2009 and renamed L&T Mutual Fund.
L&T Mutual Fund managed assets of 52.14 billion rupee($1.13 billion) as of June 30, 2011, as per industry data.
Source: http://www.financialexpress.com/news/l&t-mutual-fund-ceo-sinha-quits-sources/839288/