Referees to 8 May
Perhaps the major interest this weekend will be club rugby as it is the last round of England's Premiership and France's Top 14 and several decisions to be made on play-off places. It's also the last round for Pro D2 and decisions about promotion and relegation.
International
European Nations Cup
Division 2A
Croatia vs Lithuania in Zagreb
Referee: João Murinello (Portugal)
Sweden vs Malta in Stockholm
Referee: Vladimir Volovik (Russia)
Division 2B
Serbia vs Armenia in Belgrade
Referee : Ramunas Grumbinas (Lithuania)
Division 2C
Denmark vs Israel in Odense
Referee: Didier Welfring (Luxembourg)
Division 2D
Luxembourg vs Cyprus at Stade Josy Barthel in Luxembourg
Referee: Vincent Bouchet (Norway)
Super 15, Round 12
Hurricanes vs Blues in Wellington
Referees: Jonathan Kaplan (South Africa)
Assistant referees: Keith Brown (New Zealand), Mike Fraser (New Zealand)
Television match official: James McPhail (New Zealand)
Rebels vs Reds in Melbourne
Referees: Bryce Lawrence (New Zealand)
Assistant referees: Ian Smith (Australia), Simon Moore (Australia)
Television match official: Matt Goddard (Australia)
Lions vs Cheetahs in Johannesburg
Referees: Craig Joubert (South Africa)
Assistant referees: Sindile Mayende (South Africa), Stefan Breytenbach (South Africa)
Television match official: Johann Meuwesen (South Africa)
Chiefs vs Highlanders in Hamilton
Referees: Garratt Williamson (New Zealand)
Assistant referees: Glen Jackson (New Zealand), Shane McDermott (New Zealand)
Television match official: Nick Briant (New Zealand)
Waratahs vs Force in Sydney
Referees: Stuart Dickinson (Australia)
Assistant referees: James Leckie (Australia), Andrew Lees (Australia)
Television match official: George Ayoub (Australia)
Stormers vs Crusaders at Newlands
Referees: Chris Pollock (New Zealand)
Assistant referees: Pro Legoete (South Africa), Phillip Bosch (South Africa)
Television match official: Shaun Veldsman (South Africa)
Sharks vs Brumbies in Durban
Referees: Mark Lawrence (South Africa)
Assistant referees: Lourens van der Merwe (South Africa), Reuben Rossouw (South Africa)
Television match official: Gerrie Coetzee (South Africa)
Magners League
Leinster vs Glasgow Warriors
Referee: James Jones (Wales)
Assistant referees: Simon McDowell (Ireland), Mark Patton (Ireland)
Television match official: Peter Ferguson (Ireland)
Munster vs Connacht
Referee: Dudley Phillips (Ireland)
Assistant referees: David Wilkinson (Ireland), John Carvill (Ireland)
Television match official: Brian Fitzgerald (Ireland)
Dragons vs Ulster
Referee: Alain Rolland (Ireland)
Assistant referees: Tim Hayes (Wales), Gwyn Morris (Wales)
Benetton Treviso vs Edinburgh
Referee: Leo Colgan (Ireland)
Assistant referees: Stefano Traversi (Italy), Stefano Marrama (Italy)
Scarlets vs Blues at Parc y Scarlets
Referee: Nigel Owens (Wales)
Assistant referees: Leighton Hodges (Wales), David Jones (Wales)
Aironi vs Ospreys at Stadio Zaffanella
Referee: Andy Macpherson (Scotland)
Assistant referees: Alan Falzone (Italy), Filippo Bertelli (Italy)
Domestic
Australia
New South Wales
Shute Shield
Sydney University vs Northern Suburbs at University Oval No 1
Referee: Andrew Lees
Assistant referees: Jamie McGregor, Edward Martin
Coach: John McCarthy
Randwick vs Penrith at Coogee Oval
Referee: Daniel Cheever
Assistant referees: Buddy Kyle, James Christian
Coach: Ronald Mancell
Southern Districts vs Gordon at Forshaw Rugby Park
Referee: Nathan Pearce
Assistant referees: Guy Grinham, Michael Andrews
Coach: Wayne Erickson
Manly vs West Harbour at Manly Oval
Referee: Damien Mitchelmore
Assistant referees: Darren Bradley, Michael Hogan
Coach: Michael Tanzer
Parramatta vs Eastwood at Merrylands RSL Rugby Park
Referee: Anthony Moyes
Assistant referees: Richard Madden, Ben Wawn
Warringah vs Eastern Suburbs at Pittwater Rugby Park
Referee: Ian Smith
Assistant referees: Neil Favager, Alex Richards
Coach: Peter Marshall
England
Premiership
Bath vs Newcastle Falcons at Recreation Ground
Referee: Wayne Barnes
Exeter Chiefs vs London Wasps at Sandy Park, Exeter
Referee: Llyr Apgeraint-Roberts
Gloucester vs Sale Sharks at Kingsholm
Referee: David Rose
Harlequins vs Saracens at Twickenham Stoop
Referee: Tim Wigglesworth
Leicester Tigers vs London Irish at Welford Road
Referee: Greg Garner
Northampton Saints vs Leeds Carnegie at Franklin's Gardens Northampton
Referee: tbc
Country Championship
Lancashire vs Warwickshire
Referee: Andrew Jackson
Assistant referees: Brendan Fitzmaurice, James Minards
Yorkshire vs Cheshire
Referee: Ross Campbell
Assistant referees: Dave Edmunds, Ged Stone
Cornwall vs Hertfordshire
Referee: Shane Lewis
Assistant referees: Nick Williams, Nigel Higginson
Gloucestershire vs Kent at Lydney RFC
Referee: Greg Macdonald
Assistant referees: Mark Liddell, Richard Parker-Sedgmore
Northumberland vs Durham at Tynedale RFC
Referee: Andrew Taylorson
Assistant referees: Wayne Falla, Tudor Griffiths
Somerset vs North Midlands
Referee: Karl Kirkpatrick
Assistant referees: Tom Foley, Andrew Bickle
France
Top 14, round 26
Perpignan vs Castres at Stade Aimé Giral
Referee: Maciello Frank
Assistant referees: Sébastien Minery, Régis Gabard
Television match official: Daniel Irazoqui
Stade Français vs Racing Métro at Stade Charlety (Paris)
Referee: Mathieu Raynal
Assistant referees: Salem Attalah, Dominique Parrini
Television match official: Jean-Claude Levrier
Bourgoin vs Biarritz at Stade Pierre Rajon
Referee: Bruno Bessot
Assistant referees: Laurent Sclafer, Jean-Christophe Clot
Television match official: Hadj Bachir Akim
La Rochelle v Bayonne at Stade Marcel Deflandre
Referee: Romain Poite
Assistant referees: Cédric Marchat, Pascal Ubeda
Television match official: Eric Gauzins
Agen v Brive at Stade Armandie
Referee: Stephan Pomarède
Assistant referees: David Rosich, Didier Dussaut
Television match official: Gilles Cogne
Montpellier v Toulon at Stade Yves Du Manoir (Montpellier)
Referee: Jérôme Garces
Assistant referees: Laurent Cardona, Patrick Dellac
Television match official: Jean-Marie Piraveau
Toulouse vs Clermont at Stadium de Toulouse
Referee: Christophe Berdos
Assistant referees: Sébastien Cloute, Jean-Michel Schutz
Television match official: Philippe Bonhoure
Pro D2
Mont-de-Marsan vs Oyonnax at Stade Guy Boniface
Referee: Laurent Sclafer
Assistant referees: Alain Monteux, Christophe Clavere
Goal judges: Christophe Bats, Jacques De Lemos
Pau v Grenoble at Stade du Hameau
Referee: Arnaud Blondel
Assistant referees: Vincent Blasco, Philippe Graciet
Goal judges: Martial Nin, Breil Laurent
Auch vs Bordeaux at Stade Jacques-Fouroux
Referee: Eric Soulan
Assistant referees: Mathieu Delpy, Jean-Paul Benoît
Goal judges: Fabien Soucaret, DeJean-Thomas
Colomiers vs Carcassonne at Stade Michel Bendichou
Referee: Nicolas Datas
Assistant referees: Laurent Millotte, Philippe Gorbenko
Goal judges: Mariano Salazar, Benoît Escoubet
Dax vs Narbonne at Stade Maurice Boyau
Referee: Eric Gonthier
Assistant referees: Flavien Hourquet, Stéphane Duberger
Goal judges: Régis Grulovic, Jean-Claude Pairault
Aix-en-Provence vs Albi at Stade Maurice David
Referee: Jean-Marie Piraveau
Assistant referees: Christophe Mallet, Christophe Malterre
Goal judges: Jean-François Fourquet, Thierry Cazalet
Aurillac vs Tarbes at Stade Jean-Alric
Referee: Bernard Dal Maso
Assistant referees: Dan Greuet, Denis Grenouillet
Goal judges: Pascal Vitrac, Christian Destruhaut
St-Etienne vs Lyon at Geoffroy-Guichard (Saint-Etienne)
Referee: Akim Hadj Bachir
Assistant referees: Patrick Beuriot, Gerard Gacon
Goal judges: Nicolas Allemand, Jérôme Lamarque
South Africa
Vodacom Cup Semifinals
Pampas vs Sharks XV at Olen Park, Potchefstroom
Referee: Joey Salmans
Assistant referees: Ben Crouse, Rasta Rashivenga
Television match officials: Gerrie Coetzee
Griquas vs Blue Bulls in Kimberley
Referee: Stuart Berry
Assistant referees: Quinton Immelman, Francois de Bruin
Television match officials: JC Fortuin