Kashyap, who had achieved a career-high of World No.6 last week, suffered a reversal of fortunes due to his first round exit at the recently concluded India Open. The Hyderabadi shuttler dropped five places to be ranked 11.
Mumbai's Ajay Jayaram, who had reached the India Open quarters last week, jumped three places to 27 while RMV Gurusaidutt gained five places to be placed at 28. Madhya Pradesh's Sourabh Verma rose a rung to 35.
K Srikkanth rose 11 places to 52 while H S Prannoy jumped 21 places to career-best 55.
In the women's singles, London Olympics bronze medallist Saina Nehwal retained her second position in the world rankings despite making the second round exit at India Open.