Diju hails from Ramanattukara in Kozhikode district, while Soumya is from nearby Vadakara.
Diju's partner in mixed doubles Jwala Gutta had specially flown in to Vadakara yesterday to participate in the marriage.
Jwala, who had partnered with Diju in various tournaments earlier, had paired with him at the recent London Olympics. They became the first Indian doubles pair to reach the quarter-final of World Championship in 2009 in Hyderabad.
Prominent sports personalities who graced the occasion included former sprint queen P T Usha and several badminton players from Kerala and officials.
Later, a reception was held at a hotel in Kozhikode.