South Korean volleyball player Kim Yeon Koung posted a picture of the South Korean women's volleyball team at the competition arena.
Shooter Snježana Pejčić of Croatia snapped a photo of the competition at the shooting range.
Philippine paddler Ian Lariba used Instagram to express her gratitude to her supporters despite not making it to the next round.
Singapore rower Saiyidah Aisyah showed off her new racing zootie and celebrated making it to the quarter-finals.
Singapore swimmer Joseph Schooling posted a picture of himself signing a Singapore Sports Institute board, with a caption saying "Hello, #rio2016".
Jin Wei Timothee Yap, who will represent Singapore in athletics, shared a photo of himself waving Singapore flags during the Opening Ceremony.
Compatriot Derek Wong, who will represent the country in badminton, posed with a signboard.
Norwegian rower Nils Jakob Hoff captured a stunning shot of the Rio skyline.
Iranian rower Mahsa Javer shared a photo of herself testing the Rio waters.
India's badminton player Jwala Gutta and her teammates pose in elegant saris during the opening ceremony.
Argentinian basketball player Manu Ginóbili posted this planking photo taken during the opening ceremony.
Thailand's Ratchanok Intanon, who will compete in badminton, posed underneath the Olympic rings.
Her compatriot and fellow badminton player Sapsiree Taerattanachai posted a wefie with Thai-American cyclist Amanda Carr during the Opening Ceremony.
Thai boxer Wuttichai Masuk is ready for action, flashing a peace sign in front of a practice ring.https://www.instagram.com/p/BIydRinj_AB/
Malaysian badminton player Lee Chong Wei posted a wefie with his teammates during the Opening Ceremony.
South Korean rhythmic gymnast Son Yeon Jae took some time off to relax amid the pressures of competition.