"Its been a year since our beloved Dr A P J Abdul Kalam left us & created a void that is irreplaceable (sic)," he wrote on micro-blogging site Twitter.
"My tributes to this great personality," he said.
Commemorating Kalam's first death anniversary, a life-size statue was unveiled at Peikarumbu in his hometown at Rameswaram today.
Kalam passed away on July 27 last year after suffering a massive cardiac arrest while delivering a lecture at IIM-Shillong in Meghalaya.