"The Aviva Premiership Rugby Final has sold out for the last five years and the same thing is likely to happen again this season," said Robshaw.
"It was great to see supporters from teams across England at Twickenham watching the final last year. It's an excellent event with an exciting atmosphere that appeals to supporters of all teams."
This season's final is on Saturday 25 May, at Twickenham, and from today the best tickets are on sale through Ticketmaster and the RFU.
"It was an honour to play at Twickenham last May when the stadium was packed," Robshaw added. "It is a great day out for the whole family."
Tickets start at £12.50 for Juniors and go up to £75 for premium tickets, which are very limited. They can be purchased from www.ticketmaster.co.uk or by calling 0844 847 2492.
Full price adult tickets are £75, £60, £50, £40 and £25. All junior tickets (for under 16s) are discounted to half the adult price (except in the £75 premium seating areas, where there are no discounts).