Yes, in the United States (Region 1) you can get the entire series on DVD, however there is no definitive boxed set.
There is currently only one box set that includes the first eight films (all released by Paramount Pictures) titled "From Crystal Lake to Manhattan". New Line/Warner Brothers is planning to release "The Jason Slasher Collection" which will include "Jason Goes to Hell: The Final Friday", "Jason X", & "Freddy vs. Jason".
The films are available in the following editions:
"Friday the 13th" - Released 1999 (Widescreen, Includes Theatrical Trailer )
Released 2006 (Widescreen, Includes On Extras Disc Friday the 13th Chronicles Part 1, Secrets Galore Behind the Gore Part 1, Deleted and Alternate Scenes, & Theatrical Trailer **ONLY AVAILABLE IN BOX SET**)
Released 2009 (Widescreen, Uncut, Commentary with Director, Fresh Cuts: Tales from "Friday the 13th", Man Behind the Legacy: Sean S. Cunningham, Friday the 13th: Special Reunion, Lost Tales From Camp Blood Part 1, & Theatrical Trailer)
"Friday the 13th Part 2" - Released 1999 (Widescreen, Includes Theatrical Trailer)
Released 2006 (Widescreen, Includes On Extras Disc Friday the 13th Chronicles Part 2 & Theatrical Trailer **ONLY AVAILABLE IN BOX SET**)
Released 2009 (Widescreen, Includes Inside Crystal Lake Memories, Horror Convention, Lost Tales From Camp Blood Part 2, Slasher Films: Going for the Jugular, Jason Textual Trivia Track, Jason Forever, &Theatrical Trailer)
"Friday the 13th Part III" - Released 1999 (Widescreen, Includes Theatrical Trailer)
Released 2006 (Widescreen, Includes Commentary Track with Cast and Crew and on Extras Disc Friday the 13th Chronicles Part 3 & Theatrical Trailer**ONLY AVAILABLE IN BOX SET**)
Released 2009 (Widescreen, In 3-D, 4 Pairs of 3-D Glasses, Extra Information on Special Features Coming Soon!)
"Friday the 13th: The Final Chapter" - Released 1999 (Widescreen, Includes Theatrical Trailer )
Released 2006 (Widescreen, Includes on Extras Disc Friday the 13th Chronicles Part 4, Secrets Galore Behind the Gore Part 2, Deleted Scenes, & Theatrical Trailer**ONLY AVAILABLE IN BOX SET**)
"Friday the 13th: A New Beginning" - Released 1999 (Widescreen, Includes Theatrical Trailer )
Released 2006 (Widescreen, Includes on Extras Disc Friday the 13th Chronicles Part 5 & Theatrical Trailer**ONLY AVAILABLE IN BOX SET**)
"Jason Lives: Friday the 13th Part VI" - Released 1999 (Widescreen, Includes Theatrical Trailer )
Released 2006 (Widescreen, Includes Commentary with Director and on the Extras Disc Friday the 13th Chronicles Part 6, Friday Artifacts and Collectables, Deleted Scenes, & Theatrical Trailer**ONLY AVAILABLE IN BOX SET**)
"Friday the 13th Part VII: The New Blood" - Released 1999 (Widescreen)
Released 2006 (Widescreen, Includes Commentary with Director and Actor and on the Extras Disc Friday the 13th Chronicles Part 7, Friday Artifacts and Collectables, Secrets Galore Behind the Gore Part 3, Deleted Scenes, & Theatrical Trailer**ONLY AVAILABLE IN BOX SET**)
"Friday the 13th Part VIII: Jason Takes Manhattan" - Released 1999 (Widescreen)
Released 2006 (Widescreen, Includes Commentary with Director and on the Extras Disc Friday the 13th Chronicles Part 8, Friday Artifacts and Collectables, & Theatrical Trailer**ONLY AVAILABLE IN BOX SET**)
"Jason Goes to Hell: The Final Friday" - Released 2002 (Widescreen and Full Screen, Includes Commentary with Screenwriter and Director, Alternate Scenes, Jump to Death, & Theatrical Trailer)
Released 2009 (Widescreen, Extra Information on Special Features Coming Soon!, **ONLY AVAILABLE IN BOX SET**)
"Jason X" - Released 2002, Widescreen and Full Screen, Includes Commentary with Director, Screenwriter, and Producer, The Many Lives of Jason Voorhees, Jump to Death, Trailer Vault, & Theatrical Trailer
Released 2009 (Widescreen, Extra Information on Special Features Coming Soon!, **ONLY AVAILABLE IN BOX SET**)
"Freddy vs. Jason" - Released 2004, Widescreen and Full Screen, Includes Commentary with Director and Actors, Genesis: Development Hell, On Location: Springwood Revisited, Art Direction: Jason's Decorating Tips, Stunts: When Push Comes to Shove, Make-Up Effects: Freddy's Beauty Secrets, Visual Effects, Camp Hackenslash Promotion, Deleted Scenes, Trailer Vault, Theatrical Trailer
Released 2009 (Widescreen, Extra Information on Special Features Coming Soon!, **ONLY AVAILABLE IN BOX SET**)