2023 NSW Open

The 2023 NSW Open was a professional tennis tournament played on outdoor hard courts. It was the third edition of the tournament which was part of the 2023 ATP Challenger Tour and the ninth edition of the tournament which was part of the 2023 ITF Women's World Tennis Tour. It took place in Sydney, Australia between 30 October and 5 November 2023.

Men's singles

 * 🇯🇵 Taro Daniel def. 🇦🇺 Marc Polmans 6–2, 6–4.

Women's singles

 * 🇦🇺 Destanee Aiava def. 🇦🇺 Astra Sharma, 6–3 6–4

Men's doubles

 * 🇺🇸 Ryan Seggerman / 🇺🇸 Patrik Trhac def. Ruben Gonzales / 🇰🇷 Nam Ji-sung 6–4, 6–4.

Women's doubles

 * 🇦🇺 Destanee Aiava / 🇦🇺 Maddison Inglis def. 🇯🇵 Kyōka Okamura / 🇯🇵 Ayano Shimizu, 6–0, 6–0

Seeds

 * 1 Rankings are as of 23 October 2023.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇦🇺 Jacob Bradshaw
 * 🇦🇺 Blake Ellis
 * 🇦🇺 Pavle Marinkov

The following player received entry into the singles main draw as a special exempt:
 * 🇭🇰 Coleman Wong

The following players received entry from the qualifying draw:
 * 🇦🇺 Matthew Dellavedova
 * 🇯🇵 Hiroki Moriya
 * 🇰🇷 Nam Ji-sung
 * 🇳🇿 Ajeet Rai
 * 🇺🇸 Ryan Seggerman
 * 🇳🇿 Rubin Statham

The following players received entry as lucky losers:
 * 🇦🇺 Blake Mott
 * 🇯🇵 Yusuke Takahashi

Seeds

 * 1 Rankings are as of 23 October 2023.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇦🇺 Gabriella Da Silva-Fick
 * 🇦🇺 Maya Joint
 * 🇦🇺 Alana Parnaby
 * 🇦🇺 Ivana Popovic

The following player received entry using a junior exempt:
 * 🇺🇸 Lea Ma

The following players received entry from the qualifying draw:
 * 🇯🇵 Shiho Akita
 * 🇯🇵 Haruna Arakawa
 * 🇨🇿 Michaela Bayerlová
 * 🇯🇵 Yui Chikaraishi
 * 🇺🇸 Mia Horvit
 * 🇯🇵 Eri Hozumi
 * 🇯🇵 Chihiro Muramatsu
 * 🇯🇵 Hikaru Sato