| @WelshCharityVet | @WelshCharityVet | NLD | Mens Vets Pier | 2019 | Confirmed | Red Black Yellow |
| 3/4 DM RFC | 3/4 DM RFC | ITA | Mens Sevens Pier | 2019 | Confirmed | Blue - Green - White |
| 7 Fantastics | 7 Fantastics | FRA | Mens Sevens Pier | 2019 | Confirmed | Blue |
| A.S.R.V. Ascrum 1 | Ascrum | NLD | Mens Sevens Pier | 2019 | Confirmed | Black, white, red |
| AAC Adventurers | AAC Amsterdam | NLD | Mens Sevens Pier | 2019 | Confirmed | White and Blue Horizontal Bar |
| AAC Amazonas Amsterdam | AAC Amsterdam | NLD | Ladies Sevens Pier | 2019 | Confirmed | |
| AAC Amsterdam | AAC Amsterdam | NLD | Ladies Sevens Pier | 2019 | Confirmed | |
| AAC Amsterdam | AAC Amsterdam | NLD | Mens Sevens Pier | 2019 | Confirmed | |
| Alkmaar Hunters | HUNTERS | NLD | Mens Sevens Pier | 2019 | Confirmed | Red shirts Black shorts |
| Almaty RC | Almaty RC | KAZ | Ladies Sevens Pier | 2019 | Confirmed | blue and white |
| Amstelveen RC | Amstelveen RC | NLD | Mens Sevens Pier | 2019 | Confirmed | Blauw-Wit |
| ASC Dukla | ASC Dukla | CZE | Mens Sevens Pier | 2019 | Confirmed | red/yellow |
| Bassets Babes | RC The Bassets | NLD | Ladies Sevens Pier | 2019 | Confirmed | black,brown and white |
| Breda Bandits | Bredase Rugby Club | NLD | Mens Sevens Shield | 2019 | Confirmed | Green Shirts, black shorts |
| Bucharest wolves | Bucharest WOLFS | ROM | Mens Sevens Pier | 2019 | Confirmed | YELLOW AND BLUE |
| Castricum | Castricum | NLD | Mens Sevens Pier | 2019 | Confirmed | Black & Yellow |
| Chicken Milano | Chicken Milano | ITA | Mens Sevens Shield | 2019 | Confirmed | yellow/green |
| Dambusters | Dambusters | INT | Mens Sevens Pier | 2019 | Confirmed | Red/White/Blue |
| Dambusters Ladies | Dambusters | INT | Ladies Sevens Pier | 2019 | Confirmed | Red/White/Blue |
| Dambusters Vets | Dambusters | INT | Mens Vets Pier | 2019 | Confirmed | Red/White/Blue |
| Danish Vikings | Danish Vikings | DNK | Mens Sevens Pier | 2019 | Confirmed | Red and white |
| Dellftt Tigers | Paarse Rebellen | NLD | Ladies Sevens Pier | 2019 | Confirmed | |
| DomCity Barbarians | URC | NLD | Ladies Sevens Pier | 2019 | Confirmed | red and blue |
| DSR-C | Delftsche Studenten Rugby-Club | NLD | Mens Sevens Pier | 2019 | Confirmed | White, black & red |
| EUSKADI BASQUE COUNTRY | Basque Country 7 | ESP | Mens Sevens Pier | 2019 | Confirmed | |
| Gitanes Olympiques | Les Gitanes Olympiques | FRA | Ladies Sevens Pier | 2019 | Confirmed | White & Red |
| Ibuprofen veterans | RFC Haarlem | NLD | Mens Vets Pier | 2019 | Confirmed | Pink, Black, White |
| Israel 7's | Israel | ISR | Mens Sevens Pier | 2019 | Confirmed | BLUE AND WHITE |
| KHM WOLVES | Krommenhoek Matrix 7's Team | NLD | Mens Sevens Pier | 2019 | Confirmed | White / Black |
| Lithuanian 7's | Lithuanian rugby federation | LTU | Mens Sevens Pier | 2019 | Confirmed | Black and green jersey |
| Millfield Old Boys Legends | Millfield Old Boys RFC | ENG | Mens Vets Pier | 2019 | Confirmed | |
| Mo Bro Originals | Mo Bro | INT | Mens Vets Pier | 2019 | Confirmed | |
| Mo Bro Vets | Mo Bro | INT | Mens Vets Pier | 2019 | Confirmed | |
| Mo Bro's | Mo Bro | INT | Mens Sevens Pier | 2019 | Confirmed | |
| Mo Sista's | Mo Bro | INT | Ladies Sevens Pier | 2019 | Confirmed | |
| Mother F’in Gentlemen | Mother F'in Gentlemen | NLD | Mens Sevens Shield | 2019 | Confirmed | |
| Nada | RC Nada | HRV | Ladies Sevens Pier | 2019 | Confirmed | Purple or white with red cubes |
| Navigators 10th Anniversary | The Old Navigators | NLD | Mens Sevens Shield | 2019 | Confirmed | |
| Nederland 7's | Rugby Nederland Dames 7s | NLD | Mens Sevens Pier | 2019 | Confirmed | Blue, white and orange |
| Nomads 7's | Nomads 7's | ENG | Ladies Sevens Pier | 2019 | Confirmed | |
| NRW Ladies | Rugby-Verband NRW | DEU | Ladies Sevens Pier | 2019 | Confirmed | Green white red |
| Nyenrode 7s | Nyenrode 7s | INT | Mens Sevens Pier | 2019 | Confirmed | Yellow / Red / Black |
| OXFAM CRUSADER 7s Club | OXFAM CRUSADER 7s | ENG | Mens Sevens Pier | 2019 | Confirmed | BLACK GREEN WHITE |
| Oysters | Oysters | NLD | Mens Sevens Pier | 2019 | Confirmed | Blue |
| Powerbombs 7s | Powerbombs 7's | SCO | Mens Sevens Pier | 2019 | Confirmed | |
| Projecx Waterboys | Projecx Waterboys | SCO | Mens Sevens Pier | 2019 | Confirmed | Blue/Yellow & Pink/White |
| Rah Rah Roosters | Rah Rah Roosters | INT | Mens Sevens Pier | 2019 | Confirmed | Yellow/Red |
| Randwick Magic | Randwick Magic | AUS | Ladies Sevens Pier | 2019 | Confirmed | |
| RC Chartreuse | RC Chartreuse | FRA | Mens Sevens Shield | 2019 | Confirmed | Black and White |
| Red Devils | Midleton | IRL | Mens Sevens Shield | 2019 | Confirmed | Red Camouflage |
| Rex Club Red Kites | Rex Club Red Kites | SCO | Mens Sevens Pier | 2019 | Confirmed | Red/ Blue/ White |
| Rex Club Red Kites Ladies | Rex Club Red Kites | SCO | Ladies Sevens Pier | 2019 | Confirmed | Red/ Blue/ White |
| RFC Haarlem | RFC Haarlem | NLD | Mens Sevens Pier | 2019 | Confirmed | |
| RSRC | Rotterdamse Studenten RC | NLD | Mens Sevens Shield | 2019 | Confirmed | Red Green |
| RSV Cologne | Cologne Crusaders | DEU | Mens Sevens Shield | 2019 | Confirmed | Bordeaux/ White/ Black |
| Rugby Nederland - Dames 7s | Rugby Nederland Dames 7s | NLD | Ladies Sevens Pier | 2019 | Confirmed | Orange |
| Rugby-Shop Lady BaBaas | Rugbyshop | NLD | Ladies Sevens Pier | 2019 | Confirmed | |
| Russian National rugby'7 Development team | Russian National rugby'7 team | RUS | Mens Sevens Pier | 2019 | Confirmed | |
| Russian National rugby'7 team | Russian National rugby'7 team | RUS | Mens Sevens Pier | 2019 | Confirmed | |
| Samurai International RFC | Samurai International RFC | INT | Mens Sevens Pier | 2019 | Confirmed | |
| Scavengers 7S | Scavengers 7S | FRA | Mens Sevens Pier | 2019 | Confirmed | Bleu/green |
| Seventise | Seventise | FRA | Mens Sevens Pier | 2019 | Confirmed | |
| Shandong Provincial Rugby Sevens | China Women | CHN | Ladies Sevens Pier | 2019 | Confirmed | red(home)/black(guest) |
| Shandong Provincial Rugby Sevens | China Women | CHN | Mens Sevens Pier | 2019 | Confirmed | red(home)/black(guest) |
| SHAPE Barbarians RFC | SHAPE Barbarians RFC | BEL | Mens Sevens Shield | 2019 | Confirmed | Green/Black |
| Stade Rennais Rugby | Stade Rennais Rugby | FRA | Ladies Sevens Pier | 2019 | Confirmed | Black - red or white |
| Team Turn Over | Turn Over | NLD | Mens Sevens Pier | 2019 | Confirmed | |
| The gentlemen 7s team | AAC Rugby | NLD | Mens Sevens Shield | 2019 | Confirmed | |
| The Iguanas | ISMB Rugby | NLD | Mens Sevens Shield | 2019 | Confirmed | white and green |
| TongaVets | Tonga Vets | NLD | Mens Vets Pier | 2019 | Confirmed | |
| Transact Pro | RC Miesnieki | LVA | Mens Sevens Pier | 2019 | Confirmed | Red&black |
| W.O.R. (Watch Out Rollators) | AAC Amsterdam | NLD | Ladies Vets Pier | 2019 | Confirmed | |
| Wales Women | Wales Women 7s | WAL | Ladies Sevens Pier | 2019 | Confirmed | |
| WEST COAST GREMLINS | WEST COAST VIKINGS | SWE | Ladies Vets Pier | 2019 | Confirmed | Green/ pink |
| West Coast Masters | West Coast Masters | SWE | Mens Vets Pier | 2019 | Confirmed | white blue |
| Wimoweh 7's | Alnwick RFC | ENG | Mens Sevens Shield | 2019 | Confirmed | Blue, Gold, White |
| Wooden Spoon Marauders | Wooden Spoon Marauders | ENG | Ladies Sevens Pier | 2019 | Confirmed | |
| Wooden Spoon Marauders | Wooden Spoon Marauders | ENG | Mens Sevens Pier | 2019 | Confirmed | |
| Youth A | AAC Rugby | NLD | Youth7s | 2019 | Confirmed | |
| Youth B | AAC Rugby | NLD | Youth7s | 2019 | Confirmed | |
