ITTF Challenge Series

{{Infobox sports league

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| formerly =

| sport = Table tennis

| founded = 2013

| folded = 2020

| replaced = World Table Tennis Feeder Series

| owner = International Table Tennis Federation

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| related_comps = ITTF World Tour

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| website = [https://www.ittfchallengeseries.com/ ittfchallengeseries.com]

| footnotes =

}}

The ITTF Challenge Series was an annual series of table tennis tournaments organised by the International Table Tennis Federation (ITTF). Initially created in 2013 as the third tier of the ITTF World Tour (below the Super Series and Major Series), the Challenge Series became a separate tour in 2017. It was the ITTF's secondary tour, below the World Tour.{{cite web |title=The ITTF World Tour 2013 was expanded to include the Americas |url=https://www.allabouttabletennis.com/ittf-world-tour-2013.html |website=All About Table Tennis |access-date=18 July 2018}}{{cite web |title=A motivating force, the Challenge tournaments |url=https://www.ittf.com/2016/12/15/motivating-force-challenge-tournaments/ |website=ITTF |date=15 December 2016 |access-date=18 July 2018}}{{cite web |title=ITTF Opens up Bidding for Revamped 2017 ITTF World Tour |url=http://www.ettu.org/en/n/news/2016/april/ittf-opens-up-bidding-for-revamped-2017-ittf-world-tour/ |website=ETTU |access-date=10 June 2018}}

Starting from 2019, the series had two tiers: ITTF Challenge Plus and ITTF Challenge.{{cite web |title=2019 ITTF CHALLENGE Additional Changes for 2019 |url=https://d3mjm6zw6cr45s.cloudfront.net/2018/05/2019_Challenge_Changes_.pdf |website=ITTF Challenge Series |access-date=10 June 2018}}{{cite web |title=ITTF open bidding process for 2019 Challenge Series |url=https://www.insidethegames.biz/articles/1065171/ittf-open-bidding-process-for-2019-challenge-series |website=Inside The Games |date=17 May 2018 |access-date=10 June 2018}} Canada, Nigeria, North Korea, Oman, Paraguay, and Portugal were announced as host for the Challenge Plus tournaments for the 2019 season.{{cite web |title=ITTF Announces Record Number of Challenge Series Events for 2019 |url=https://www.ittf.com/2018/08/08/ittf-announces-record-number-challenge-series-events-2019/ |website=ITTF |date=8 August 2018 |access-date=9 September 2018}}

Since 2021, the ITTF Challenge Series has been effectively replaced by the newly created World Table Tennis Feeder Series.