| 1601 |  | Insanity Pro Wrestling | Indianapolis, Indiana, USA | 2001-2012 | | |
| 1602 |  | Inspire After Dark | Austin, Texas, USA | 2013- | | |
| 1603 |  | Integrity Sports Entertainment Australia | New South Wales, Australia | 2024- | | |
| 1604 |  | Intense Action Wrestling | Manassas, Virginia, USA | 2023- | | |
| 1605 |  | Intense Entertainment Wrestling | Union City, New Jersey, USA | 2005 | | |
| 1606 | | Intense Florida Wrestling | Sanford, Florida, USA | 2001-2001 | | |
| 1607 |  | Intense Wrestling Alliance LLC | Nutley, New Jersey, USA | 2018- | | |
| 1608 |  | Intense Wrestling Entertainment | Augusta, Georgia, USA | 2018- | | |
| 1609 |  | Inter Championship Wrestling | Montreal, Quebec, Canada | 1990- | | |
| 1610 | | Intercontinental Championship Wrestling | Tennessee, USA | 1996 | | |
| 1611 |  | Intercontinental Wrestling Association | Savage, Minnesota, USA | 2008-2014 | | |
| 1612 |  | Intergender Bonanza | Williamstown, New Jersey, USA | 2018- | | |
| 1613 |  | International Bigtime Wrestling | Michigan, USA | 2007- | | |
| 1614 |  | International Championship Wrestling | Missouri, USA | 1986-2012 | | |
| 1615 |  | International Championship Wrestling | Lexington, Kentucky, USA | 1978-1984 | | |
| 1616 |  | International Championship Wrestling | Fort Sill, Oklahoma, USA | 2012 | | |
| 1617 | | International Championship Wrestling | Cloverdale, British Columbia, Canada | 1996-2002 | | |
| 1618 | | International Championship Wrestling Alliance | Florida, USA | 1989-1995 | | |
| 1619 |  | International Combat Sports | Charleston, West Virginia, USA | 2014-2023 | | |
| 1620 |  | International High Powered Wrestling | Paramus, New Jersey, USA | 2001-2004 | | |
| 1621 |  | International Pro Wrestling | Harrisburg, Pennsylvania, USA | 1996-2004 | | |
| 1622 |  | International Pro Wrestling | Asheville, North Carolina, USA | 1996-1996 | | |
| 1623 | | International Stars Of Wrestling | Victoria, British Columbia, Canada | 1994-1995 | | |
| 1624 | | International Women's * Grand Prix | Tokyo, Japan | 2005-2005 | | |
| 1625 |  | International World Class Championship Wrestling | Boston, Massachusetts, USA | 1984-1995 | | |
| 1626 |  | International Wrestling | Montreal, Quebec, Canada | 1980-1987 | | |
| 1627 |  | International Wrestling | Halifax, Nova Scotia, Canada | 1969-1984 | | |
| 1628 |  | International Wrestling Alliance | Columbus, Ohio, USA | 1988-2019 | | |
| 1629 |  | International Wrestling Association | Cleveland, Ohio, USA | 1975-1977 | | |
| 1630 |  | International Wrestling Association | Girard, Ohio, USA | 1989- | | |
| 1631 |  | International Wrestling Association | Leicester, Leicestershire, England, UK | 2021-2022 | | |
| 1632 |  | International Wrestling Association Japan | Tokyo, Japan | 1994-2014 | | |
| 1633 | | International Wrestling Association Montreal | Montreal, Quebec, Canada | 1965-1976 | | |
| 1634 |  | International Wrestling Australia | Bondi Junction, New South Wales, Australia | 1998- | | |
| 1635 |  | International Wrestling Enterprise | Tokyo, Japan | 1966-1981 | | |
| 1636 | | International Wrestling Enterprises | El Paso, Texas, USA | 1962-1964 | | |
| 1637 |  | International Wrestling Entertainment | Genua, Ligurien, Italien | 2016- | | |
| 1638 | | International Wrestling Federation | Reading, Massachusetts, USA | 1979-1996 | | |
| 1639 |  | International Wrestling Federation | Arizona, USA | 2014-2015 | | |
| 1640 |  | International Wrestling Federation | Brockport, New York, USA | 2005- | | |
| 1641 |  | International Wrestling League | Tlalnepantla, Estado de Mexico, Mexiko | 2010- | | |
| 1642 |  | International Wrestling League | London, England, UK | 2018-2020 | | |
| 1643 |  | International Wrestling Network | London, England, UK | 2015- | | |
| 1644 | | International Wrestling Promotion | Madison, Wisconsin, USA | xxxx-1973 | | |
| 1645 |  | International Wrestling Promotions | England, UK | 2004-2009 | | |
| 1646 |  | International Wrestling Zone | Italien | 2006-2006 | | |
| 1647 | | Internationaler Berufsringkämpfer-Verband | Hamburg, Deutschland | 1947-1986 | | |
| 1648 | | Internationaler Ringer Verband | Berlin, Deutschland | 1911-1933 | | |
| 1649 | | Interstate 8 Promotions | Willowbrook, Illinois, USA | 2002-2004 | | |
| 1650 |  | Invasion Championship Wrestling | Kelowna, British Columbia, Canada | 2013-2018 | | |
| 1651 |  | Invasion Indy | Ciudad Nezahualcoyotl, Estado de Mexico, Mexiko | 2017- | | |
| 1652 |  | Invasion RCH | Naucalpan de Juarez, Estado de Mexico, Mexiko | 2013-2017 | | |
| 1653 |  | Invictus Pro Wrestling | New Jersey, USA | 2020-2023 | | |
| 1654 | | Iran Wrestling Group | Iran | 2009-2012 | | |
| 1655 |  | Irish Whip Wrestling | Dublin, Ireland | 2002- | | |
| 1656 |  | Iron Fist Pro | Adelaide, South Australia, Australia | 2018-2019 | | |
| 1657 |  | Iron Girders Pro Wrestling | Glasgow, Scotland, UK | 2022- | | |
| 1658 |  | Iron Heart Pro Wrestling | Rosemount, Minnesota, USA | 2021- | | |
| 1659 |  | Iron Spirit Pro | Normal, Illinois, USA | 2018- | | |
| 1660 |  | Ironfist Wrestling | Herefordshire, England, UK | 2011-2020 | | |
| 1661 |  | Israeli Pro Wrestling Association | Netanya, Israel | 2003- | | |
| 1662 |  | Israeli Wrestling League | Petah Tikva, Israel | 2013- | | |
| 1663 |  | Itabashi Pro Wrestling | Tokyo, Japan | 2014- | | |
| 1664 |  | Italian Wrestling Association | Provinz Frosinone, Italien | 2016- | | |
| 1665 |  | Italian Wrestling Superstar | Caselle, Turin, Italien | 1997- | | |
| 1666 |  | J STAGE Pro Wrestling | Tokyo, Japan | 2015- | | |
| 1667 |  | J2K | Osaka, Japan | 2002-2007 | | |
| 1668 |  | JD Star Women's Pro Wrestling | Tokyo, Japan | 1995-2007 | | |
| 1669 | | JR Promotions | Baja California, Mexiko | - | | |
| 1670 |  | JTO | Chiba, Japan | 2019- | | |
| 1671 |  | JWA-United Professional Wrestling | New Jersey, USA | 2001-2010 | | |
| 1672 | | Jack Curley Promotions | New York City, New York, USA | 1907-1937 | | |
| 1673 | | Jack Pfefer Promotions | New York City, New York, USA | 1924-1967 | | |
| 1674 | | Jack Price Jones Promotions | Nashville, Tennessee, USA | 1932-1940 | | |
| 1675 |  | Japan Pro Wrestling | Tokyo, Japan | 1984-1987 | | |
| 1676 |  | Japan Pro Wrestling 2000 | Osaka, Japan | 1999-2019 | | |
| 1677 |  | Japan Woman Pro-Wrestling | Tokyo, Japan | 1986-1992 | | |
| 1678 |  | Japan Wrestling Association | Tokyo, Japan | 1953-1973 | | |
| 1679 |  | Jersey Live Wrestling | New Jersey, USA | 2010-2010 | | |
| 1680 |  | Jersey Premiere Championship Wrestling | Toms River, New Jersey, USA | 2016-2018 | | |
| 1681 |  | Jersey Rampage Wrestling | New Jersey, USA | 2005-2007 | | |
| 1682 |  | Jersey Shore Championship Wrestling | New Jersey, USA | 2008-2012 | | |
| 1683 | | Jesse Wilson Promotions | Austin, Texas, USA | 1931-1932 | | |
| 1684 | | Jim Henry Promotions | Denver, Colorado, USA | 1956-19xx | | |
| 1685 | | Joe Turner Promotions | Washington, District Of Columbia, USA | 1930-1931 | | |
| 1686 | | John Collins Promotions | Dayton, Ohio, USA | 1930-1931 | | |
| 1687 | | John Krone Promotions | Chicago, Illinois, USA | 1900-1934 | | |
| 1688 | | Johnston Enterprises | New York City, New York, USA | 1912-25.11.1956 | | |
| 1689 |  | Joint Promotions | Leeds, West Yorkshire, England, UK | 1952-1992 | | |
| 1690 |  | Joint Promotions Wrestling | Elizabeth, South Australia, Australia | 2002-2006 | | |
| 1691 |  | Jonquiere Championship Wrestling | Jonquière, Quebec, Canada | 2000- | | |
| 1692 | | Jordan Promotions | Birmingham, Alabama, USA | -1939 | | |
| 1693 |  | Journey Pro | Kansas City, Missouri, USA | 2018-2022 | | |
| 1694 |  | Junction City Wrestling | Toronto, Ontario, Canada | 2017- | | |
| 1695 |  | Jurassic Pro Wrestling | Essex, England, UK | 2021- | | |
| 1696 |  | Just Do Wrestling | St Helens, Merseyside, England, UK | 2014-2018 | | |
| 1697 | | Just Wrestling | Surrey, British Columbia, Canada | 2004-2005 | | |
| 1698 |  | K-Star Wrestling | Birmingham, West Midlands, England, UK | 1998- | | |
| 1699 |  | KAOS Wrestling Organization | New Baltimore, Michigan, USA | 2023- | | |
| 1700 |  | KAOZ Lucha Libre | Apodaca, Nuevo Leon, Mexiko | 2018- | | |
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