Most Sixes in a Test Innings by an Indian: Navjot Singh Sidhu and Mayank Agarwal.

In 1994 Navjot Singh Sidhu smashed 8 sixes in his innings of 124 against Sri Lanka in Lucknow.

Most Sixes for India in a Test Innings

8 - N Sidhu & Mayank  Agarwal

7 - V Sehwag, Harbhajan, H Pandya, Rohit  Sharma.

6 - R Shastri, V Sehwag, MS Dhoni (thrice), R Sharma (twice), M Agarwal