A similar protest will be also held in Chennai on the same day, he said.
A staunch supporter of Tamil Eeelam (separate home land for Lankan Tamils), Vaiko had earlier led protestors to oppose Rajapaksa's visit to Sanchi in Madhya Pradesh last year.
Vaiko, who lost in the recent Lok Sabha elections along with six other party nominees contesting as part of the alliance formed by BJP, said it was not proper for Rajapaksa to attend the swearing-in of Modi as “it will spoil the sanctity” of the ceremony.
The MDMK leader, who had personally met Modi and BJP President Rajnath Singh in Delhi yesterday arguing against the Lankan leader's participation in the May 26 swearing-in, alleged that minority Tamils in Sri Lanka were still facing many difficulties.
Terming as a “betrayal” India abstaining from voting in a US-sponsored resolution on human rights violations in a UN body in March this year, Vaiko charged that officials behind such a move were ‘misleading' Modi in this matter.