three so far and there is reports of a fourth and even fith season.the better answer should be 13 as you see the are 13 episodes so therefore there should be 13 seasons of merlin just that it has not been shown on tv.
Apparently there are about 4 seasons in the series so far :L Hope this helped! :)
There've been 3 complete seasons and the 4th one's already started
I believe hulu.com has the first two seasons of Merlin that you can watch for free and legally (it gets its money from the commercials it advertises on the site and intermittently throughout the show).
13
2 seasons
Three seasons.
There've been 3 complete seasons and the 4th one's already started
Their are 5 series in Merlin
Merlin C. Williams has written: 'Weather modification research: 1963-1964, 1964-1965 winter seasons' -- subject(s): Weather control
Merlin's Ring has 366 pages.
The Fires of Merlin has 261 pages.
Merlin Effect has 430 pages.
The Mirror of Merlin has 245 pages.
Merlin's Wood has 286 pages.
Twice.
The Wings of Merlin, a book in The Lost Years of Merlin series by T.A. Barron, has around 400 pages.
I believe hulu.com has the first two seasons of Merlin that you can watch for free and legally (it gets its money from the commercials it advertises on the site and intermittently throughout the show).
The Seven Songs of Merlin has 336 pages.