The midfielder made his debut as a substitute for Rovers against Everton in September 1998, and if he takes to the field at the weekend it will be his 350th appearance for his hometown club.
"It is a good achievement for myself, though me being a little bit like I am I would have liked it to have been a lot more," said Dunn.
"I'll be delighted to hopefully be making that 350th appearance and hopefully there are a few more left as well.
"It has been a roller-coaster ride that is for sure, but the positive ones outshine the negative always, I've had some fond memories and achievements I'm really proud of."
Supporters who haven't yet purchased their tickets for Saturday's away match at Queens Park Rangers can now do so on the day of the game.
Fans have until 4pm Friday to obtain their tickets for the Loftus Road clash from Ewood Park, otherwise it is pay on the turnstiles - cash only.
Some 750 of the 1000 ticket allocation has so far been sold, with all the silver priced tickets being snapped up expect for the family area.
Ticket prices are £30.00 Adults, £20.00 Seniors (over 60), £20.00 Young Adult 16-21 (Proof of Age Required), £15.00 Under 16. Under-8s go free with an Adult ticket in the family area.
For further information call the ticket office on 0871 222 1444.