Stephanie Widjaja (born 19 February 2003) is an Indonesian badminton player affiliated with Jaya Raya Jakarta club.

[1] She was part of the national junior team that won the first Suhandinata Cup for Indonesia in 2019 BWF World Junior Championships.

[2] She also featured in the Indonesian women's winning team at the 2022 Asia Team Championships.

[3] In May 2023, Widjaja join the women's team at the 2023 SEA Games – women's team event and took the silver medal after losing to Thai team.

[4] In September, Widjaja lost at the second round of Indonesia Masters Super 100 I from 4th seed fellow Indonesian player Komang Ayu Cahya Dewi in straight games.