2001 If Stockholm Open

{{TennisEventInfo|2001|If Stockholm Open|

| date=22–28 October

| edition=33rd

| category=International Series

| draw=32S / 16D

| prize_money=$775,000

| location=Stockholm, Sweden

| venue=Kungliga tennishallen{{cite web |title=Stockholm: where tennis royalty has found regular success |url=https://www.atptour.com/en/news/tournament-heritage-stockholm |date=19 October 2020}}

| champs={{flagicon|NED}} Sjeng Schalken{{Cite web|url=https://www.atptour.com/en/scores/archive/stockholm/429/2001/draws?matchtype=singles|title=2001 Stockholm – Singles draw|publisher=Association of Tennis Professionals (ATP)}}

| champd={{flagicon|USA}} Donald Johnson / {{flagicon|USA}} Jared Palmer{{Cite web|url=https://www.atptour.com/en/scores/archive/stockholm/429/2001/draws?matchtype=doubles|title=2001 Stockholm – Doubles draw|publisher=Association of Tennis Professionals (ATP)}}

| main_name=Stockholm Open

}}

The 2001 If Stockholm Open was a men's tennis tournament played on indoor hard courts at the Kungliga tennishallen in Stockholm, Sweden and was part of the International Series of the 2001 ATP Tour. It was the 33rd edition of the tournament and ran from 22 October through 28 October 2001. Sixth-seeded Sjeng Schalken won the singles title.