Berikut daftar 17 wakil Indonesia di Siangpore Open 2021 (1-6 Juni 2021).
Tunggal putra: Jonatan Christie, Anthony Sinisuka Ginting, Shesar Hiren Rhustavito, Tommy Sugiarto
Tunggal putri: Gregoria Mariska Tunjung, Fitriyani, Yulia Yosephine Susanto
Ganda putra: Marcus Fernaldi Gideon/Kevin Sanjaya Sukamuljo, Hendra Setiawan/Mohammad Ahsan, Fajar Alfian/Muhammad Rian Ardianto, Leo Rolly Carnando/Daniel Marthin, Berry Angriawan/Rian Agung Saputro
Ganda putri: Greysia Polii/Apriyani Rahayu, Sitia Fadia Silva Ramadhanti/Ribka Sugiarto
Ganda campuran: Praveen Jordan/Melati Daeva Oktavianti, Hafiz Faizal/Gloria Emanuelle Widjaja, Adnan Maulana/Mychelle Crhystine Bandaso.