Kaylynne Truong (Vietnamese: Trương Thảo Vy; born July 10, 2001) is a Vietnamese-American basketball player who plays for AZS Poznań of the Basket Liga Kobiet. She was drafted by the Washington Mystics in the 2024 WNBA draft. She is also a player for the Vietnam women's national team. She played college basketball for the Gonzaga Bulldogs.

Truong was born in Houston, Texas, on July 10, 2001. She is of Vietnamese heritage. Her parents are Katherine Nguyen and Truong Man. Her father played basketball and has been her coach since she was 5 years old. She has a brother named Jonathan and a twin sister named Kayleigh Truong [vi] (Vietnamese: Trương Thảo My), who is also a basketball player.

While attending Gonzaga University, she majored in kinesiology.

Truong attended Jersey Village High School in Houston, where she played four years of basketball under head coach Tamara Collier. She averaged 19.5 points, 4.2 rebounds, 4.5 assists, and 3.2 steals. She was voted 28th in ESPN's best American point guards at the high school level.

During her senior season in 2019, she helped the team to a 33–3 record. She was named the District 17-6A Most Valuable Player.

Truong played at Gonzaga University with her twin sister for 5 years, from 2019 to 2024, under head coach Lisa Fortier. She started as a reserve player for her first 3 seasons and became a starter in the last 2 years. Throughout her career at Gonzaga, she scored 282 3-pointers and started in 78 games. She was two-time All-West Coast Conference (WCC) First Team member and ranks second in program history in career assists with 623.

In the 2022–23 season, she achieved a career-high of 15.9 points per game and a 42.5% 3-point scoring rate. She was the WCC Player of the Year and an honorable mention AP All-American.

Despite her sister being injured in 2023, the twins chose to return to Gonzaga for their 5th year in 2024, citing that "Gonzaga is a really good school, and [she] love[s] playing with everyone on this team."