Argentina will then travel to the Midlands three days later and face Richard Hill's new-look squad in what will be one of the biggest games ever staged at the home of the Warriors.
Warriors also face Super 15 giants Melbourne Rebels on Monday, August 15 (kick-off 7.45pm) as part of an explosive and unforgettable period ahead of life back in the top-flight of English rugby.
Charlie Little, General Manager at Warriors, said: "We were made aware last week that Argentina would be in the country and there was interest in an extra game. Richard Hill and I acted quickly to secure the fixture as Richard felt we needed another high-quality game for the whole squad.
"This fixture will put Warriors on the rugby map and is a high profile game for us as Argentina bring their best players. To secure games with both a Super 15 team and international side, currently ranked eighth in the world, is very exciting. This will be the best pre-season the club has ever had and the ideal preparation for our return to the Aviva Premiership.
"We realise the importance of starting our league season well and fixtures against international and Super 15 opposition, plus two very talented and tough RFU Championship sides, will give the whole squad a real test."
The Warriors were previously due to face Stourbridge RFC on this date. However, Little revealed that game had already been called off prior to the agreement with Argentina.
"Stourbridge kick-off their competitive league season the Saturday after this date and so had indicated that playing the Warriors in the week prior was no longer ideal," added Little. "The Argentina game helps all parties and we now look forward to welcoming the Pumas to Sixways."
Tickets for both the Argentina and Melbourne Rebels games go on sale on Tuesday at 9am. Call the Warriors Box Office on 01905 454183 or click on warriors.co.uk for more information.
Season Ticket holders will be able to buy a ticket for the Pumas clash for just £10. Adult tickets are £20 and Junior tickets are just £5. Under-11s gain entry for FREE when accompanied by a paying adult.
Tickets for the Melbourne Rebels fixture are just £15 for adults and £5 for juniors. Adult season ticket holders will be charged a discounted rate of £10. Under-11s are FREE when accompanied by a paying adult.