2023 NSW Open

{{Infobox tennis event|2023|NSW Open|

| date=30 October–5 November

| edition=3rd (men)
9th (women)

| surface=Hard / Outdoor

| location=Sydney, Australia

| category=ATP Challenger Tour
ITF Women's World Tennis Tour

| champms = {{flagicon|JPN}} Taro Daniel

| champmd = {{flagicon|USA}} Ryan Seggerman / {{flagicon|USA}} Patrik Trhac

| champws = {{flagicon|AUS}} Destanee Aiava

| champwd = {{flagicon|AUS}} Destanee Aiava / {{flagicon|AUS}} Maddison Inglis

| main_name = NSW Open Challenger {{!}} 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.

Champions

=Men's singles=

{{flagicon|JPN}} Taro Daniel def. {{flagicon|AUS}} Marc Polmans 6–2, 6–4.

=Women's singles=

{{flagicon|AUS}} Destanee Aiava def. {{flagicon|AUS}} Astra Sharma, 6–3 6–4

=Men's doubles=

{{flagicon|USA}} Ryan Seggerman / {{flagicon|USA}} Patrik Trhac def. {{flagicon|PHI}} Ruben Gonzales / {{flagicon|KOR}} Nam Ji-sung 6–4, 6–4.

=Women's doubles=

{{flagicon|AUS}} Destanee Aiava / {{flagicon|AUS}} Maddison Inglis def. {{flagicon|JPN}} Kyōka Okamura / {{flagicon|JPN}} Ayano Shimizu, 6–0, 6–0

Men's singles main draw entrants

=Seeds=

class="sortable wikitable"
width="70"\| Country ! width="175"\| Player ! Rank¹ ! Seed
{{flag\|AUS}} \|Thanasi Kokkinakis \|68 \|1
{{flag\|AUS}} \|Rinky Hijikata \|70 \|2
{{flag\|JPN}} \|Taro Daniel \|100 \|3
~~{{flag\|AUS}}~~ \|~~James Duckworth~~ \|~~125~~ \|4
{{flag\|JPN}} \|Shintaro Mochizuki \|131 \|5
{{flag\|AUS}} \|Marc Polmans \|160 \|6
{{flag\|KOR}} \|Hong Seong-chan \|223 \|7
{{flag\|AUS}} \|Tristan Schoolkate \|248 \|8

class="sortable wikitable"

width="70"| Country

! width="175"| Player

! Rank¹

! Seed

|Thanasi Kokkinakis

|68

|Rinky Hijikata

|70

|Taro Daniel

|100

~~{{flag|AUS}}~~

|~~James Duckworth~~

|~~125~~

|131

|160

|223

|248

¹ Rankings are as of 23 October 2023.{{Cite web|url=http://www.atptour.com/en/rankings/singles|title=Rankings | Singles | ATP Tour | Tennis|website=ATP Tour}}

=Other entrants=

The following players received wildcards into the singles main draw:

{{flagicon|AUS}} Jacob Bradshaw
{{flagicon|AUS}} Blake Ellis
{{flagicon|AUS}} Pavle Marinkov

The following player received entry into the singles main draw as a special exempt:

{{flagicon|HKG}} Coleman Wong

The following players received entry from the qualifying draw:

{{flagicon|AUS}} Matthew Dellavedova
{{flagicon|JPN}} Hiroki Moriya
{{flagicon|KOR}} Nam Ji-sung
{{flagicon|NZL}} Ajeet Rai
{{flagicon|USA}} Ryan Seggerman
{{flagicon|NZL}} Rubin Statham

The following players received entry as lucky losers:

{{flagicon|AUS}} Blake Mott
{{flagicon|JPN}} Yusuke Takahashi

Women's singles main draw entrants

=Seeds=

class="sortable wikitable"
width="70"\| Country ! width="175"\| Player ! Rank¹ ! Seed
{{flag\|KOR}} \|Jang Su-jeong \|152 \|1
{{flag\|AUS}} \|Astra Sharma \|161 \|2
{{flag\|JPN}} \|Moyuka Uchijima \|182 \|3
{{flag\|AUS}} \|Priscilla Hon \|202 \|4
{{flag\|AUS}} \|Jaimee Fourlis \|212 \|5
{{flag\|AUS}} \|Destanee Aiava \|218 \|6
{{flag\|CHN}} \|Ma Yexin \|220 \|7
{{flag\|THA}} \|Lanlana Tararudee \|233 \|8

class="sortable wikitable"

width="70"| Country

! width="175"| Player

! Rank¹

! Seed

|152

|161

|182