I like Christian romance, romantic suspense, and historical romance best, but will read just about any type of romance. I am frustrated with having to wait so long to get the next book in the series, so can anyone recommend any series that are complete? I don't care how many books they have -- I have plenty of credits. :)

Romantic suspense: 

Brockmann-Tall Dark and Dangerous starting with Prince Joe up thru #11 Nightwatch-all category romances;

Catherine Mann-Wingmen Warriors-believe the first is Grayson's Surrender-again, all categories-shouldn't be that hard to find

Historicals-not sure if you are looking for Regencies here, or other periods.

Some of my favorites:

Mary Jo Putney-Fall Angels, Silk trilogy

Mary Balogh-caveat-I'd read her laundry list if she's let me(grin) I prefer her earlier work but did enjoy her "Mistress" books, most of her "Bedwyn" books and really enjoyed her Huxtable series-but that's a current series with a new one coming out next month so I don't know if you want to get started on that. 

Carla Kelly-her Pymouth series-again, 3rd and final coming out next month

Jo Beverley-her Company of Rogues books-to a lesser extent-her "Malloren" books

Contemporary:

Nora's Quinn books as well as her Ardmore trilogy.  I really like the way Nora writes "guy". 

SEP-her Chicago Stars series.  The first one "It Had to be You" is my to-be-buried-with book-again, for me-better previous releases than what she's writing currently. 

I'm sure there's more.....

Jan

Oops, I missed the "are complete" when I posted this.  I have highlighted the series I believe are complete.

Robyn Carr - Virgin River Series (11 books, not sure if she is done)

Catherine Anderson - Kendrick/Coulter Family (10 books)

Stella Cameron - Bayou Series (10 books)

Nora Roberts:
Chesapeake Bay - 4 books
The Donovan Legacy - 4 books
The Dream Trilogy
In the Garden
The Key Trilogy
The Sign of Seven Trilogy
The Stars of Mithra

Linda Howard - The Mackenzies (5 books)

Kay Hooper - A Bishop/Special Crimes Unit Novel (12 books)

Suzanne Brockmann - Troubleshooters (I believe she has one book left in this series - Izzy's story due out in 2/11)

Marliss Melton - Navy SEAL Team Twelve (7 books)

Just for future reference, if you go to Fiction DB you can look up authors by last name and see a list of series they have written.  If you click on the author name, you will be taken to a page where you can click on the series name and see what books are in the series.  This site is a nice resource.  It's where I get the names of books authors have written to create my 94 spreadsheets I have on authors I read.  My spreadsheets have all the books they have written and all the series they have written.  This is necessary for me because I won't start reading a series until I have all the books currently written in the series.

Virgin River isn't done (though there are some who think it is LOL!) seems like she has 3 more coming out next year but couldn't swear to it

Mackenzies is good(Mackenzie's Mountain, Mackenzie's Mission, Mackenzie's Pleasure, Mackenzie's Magic(this was in anthology but has been republished in a couple of other mackenzie compilations), and Game of Chance. love these old category romances.

Nora Roberts' Born In trilogy is my favorite..she has lots of trilogies

there's a trilogy by MaryMargret Daughtridge that's good as well

gosh the other series I think are still being added to...and brockmann's troubleshooters is almost done? and marliss meltons?? gosh-a-mighty gonna cry..

another really good but still going series (though there are a LOT to catch up on if you start) is J D Robb's 'in death' series.not sure how many there are not but  a LOT!

KATI - I feel your pain. I've started a few new series that are now driving me up the wall. You'd think these great authors could write faster, wouldn't you? Then there are some series that should have been finished long before they were. i.e., several people here have mentioned Suzanne Brockmann's Troubleshooter series. What does it say about that series when the h/h of Book #6 (Gone Too Far) are again the h/h of Book #15 (Hot Pursuit)? Or when all the storylines start to sound alike? (i.e. Diana Palmer's Long, Tall Texans or Beverly Barton's Protectors series)

Recommendations:

LINDA LAEL MILLER

 McKettricks

1. High Country Bride (Historical)
2. Shotgun Bride (H)
3. Secondhand Bride (H)
4. McKettrick's Choice (H)
5. A McKettrick Christmas (H)
6. Sierra's Homecoming (Contemporary)
7. McKettrick's Luck (C)
8. McKettrick's Pride (C)
9. McKettrick's Heart (C)
10. The McKettrick Way (C)

Related to the McKettricks - distant cousins - The Montana Creeds

1. Logan
2. Dylan
3. Tyler
4. A Creed Country Christmas

Friends of the McKettricks in a nearby town - Stone Creek Novel

1. The Man from Stone Creek (H)
2. A Wanted Man (H)
3. The Rustler (H)
4. The Bridegroom (H)
5. A Stone Creek Christmas (C)
6. At Home in Stone Creek (C)

McKettricks of Texas - Another distant branch of the family tree - Currently in release, so don't start this series just yet...

1. Tate
2. Garrett
3. Austin

STEPHANIE LAURENS - Bastion Club, Cynster, Adair Casebook, Black Cobra Quartet. She writes whichever character speaks the loudest at the moment and so, they have not been published in chronological order. Best way to approach the Bastion Club and Cynster series is to disregard the publication date and use the chronological list provided on Laurens' website. Although not titled as such, this list also includes the titles published in the "Adair's Casebook" series. Quick warning: The Black Cobra series is still in progress (The Untamed Bride - pub 11/09, The Elusive Bride - pub 2/10, The Brazen Bride - due 7/10, The Reckless Bride - due 11/10), but nothing is lost by reading all the others first and by the time you are ready for these 4, they'll be readily available.

MADELINE HUNTER

Seducer series (aka The Hampton Dueling Society) - Regency - final book released 3/06

1. The Seducer
2. The Saint
3. The Charmer
4. The Sinner
5. The Romantic
6. Lord of Sin
7. Lady of Sin

Rothwell Brothers series - Regency - final book released 2/09

1. The Rules of Seduction
2. The Lessons of Desire
3. Secrets of Surrender
4. The Sins of Lord Easterbrook

JO LEIGH

In Too Deep... This short series of Harlequin Blaze titles is not like any other Blaze series. More contemporary romantic suspense than mild erotica. A group of military and civilian characters who saw something they should not have seen in Bosnia. And now they have to live way off the radar until they can find who is behind it and proove it. Otherwise, they'll all be dead. They can't trust anyone... except each other. Definitely must be read in sequential order!

1. Closer...
2. Relentless
3. Release
4. Reckoning

CHERRY ADAIR

T-FLAC series - Romantic suspense with uber alpha heroes.

1. The Mercenary
2. Kiss and Tell
3. Hide and Seek
4. In Too Deep
5. Out of Sight
6. On Thin Ice
7. Hot Ice
8. White Heat
9. Tropical Heat (in the Rescue Me anth. with stories by Lora Leigh, Cindy Gerard)

The Edge Brothers series - trilogy related to T-FLAC - 3 wizards who work for T-FLAC's psychic division

1. Edge of Danger
2. Edge of Fear
3. Edge of Darkness

Night series - trilogy related to T-FLAC - more paranormal stuff

1. Night Fall
2. Night Secrets
3. Night Shadow

RACHEL LEE

Conard County series - Contemporary stories with lotsa emotional angst, lotsa weary and wounded veterans, some romantic suspense. Currently in re-release so fairly easy to find.

1. Exile's End
2. Cherokee Thunder
3. Miss Emmaline and the Archangel
4. Ironheart
5. Lost Warriors
6. Point of No Return
7. Thunder Mountain
8. A Question of Justice
9. A Conard County Reckoning
10. Nighthawk
11. Cowboy Comes Home
12. The Catch of Conard County
13. Boots & Badges
14. Involuntary Daddy

There are a few more loosely related stories that have been added since Involuntary Daddy was published in 1999, but they aren't as impressive as this original series. Most read more like contractual obligations (books promised to the publisher) than more of the story that must be told. Conard County 2 (the next generation kinda thing) is currently in production, but these are the stories you want to add to your keeper shelf.

I am a series junky so I have endless lists of great series. These authors and series are among my keepers that I read and re-read. The Virgin River series by Robyn Carr, and the Cedar Cove and Bloom Street series by Debbie Macomber are both great but are not yet finished and on the street. *sigh*

Colleen

Some historical romance series I enjoyed:

Jo Goodman's Compass Club:

1. Let Me Be The One

2. Everything I Ever Wanted

3. All I Ever Needed

4. Beyond A Wicked KIss

Julia Quinn's Bridgertons

1. The Duke & I

2. The Viscount Who Loved Me

3. An Offer From A Gentleman

4. Romancing Mr. Bridgerton

5. To Sir Phillip, With Love

6. When He Was Wicked

7. It's IN His Kiss

8. On The Way To The Wedding

Elizabeth Hoyt's  Legend Of The Four Soldiers

1. To Taste Temptation

2. To Seduce A Sinner

3. To Beguile A Beast

4. To Desire A Devil

ooh forgot about legend of the four soldiers by Hoyt! I liked those too! and read in order.

If you haven't read Catherine Anderson (as suggested above) I would really put in a strong second for her series.  Especially since you mention enjoying Christian fiction- they don't fall into that category but there is usually an inclusion of faith/mild Christian themes in the series.

I have all three of Leslie LaFoy's  series  Her Scandalous Marriage, The Rogue's Bride, and The Duke's Proposal.    They are like Julia Quinn books, very funny, interesting women who are talented and funny, men with heart and soul and just enough mystery to the stories to be really good quick reads.

Some "keeper" finished historical series for me that I haven't seen mentioned yet are:

Loretta Chase-Carsingtons

Miss Wonderful

Mr Impossible

Lord Perfect

Not Quite A Lady

Loretta Chase- Scoundrels

The Lion's Daughter

Captives of the Night

Lord of Scoundrels

"The Mad Earl's Bride" in Three Weddings and a Kiss  (with Catherine Anderson, Lisa Kleypas and Kathleen E. Woodiwiss)

The Last Hellion

Elizabeth Hoyt- Princes Trilogy

The Leopard Prince

The Raven Prince

The Serpent Prince

Wallflowers by Lisa Kleypas

Secrets of a Summer Night

It Happened One Autumn

Devil in Winter

Scandal in Spring

A Wallflower Christmas

Marsha Canham's Robin Hood trilogy is my very favorite historical series, so I have to put in a recommendation for that one.

1. Through a Dark Mist
2. In the Shadow of Midnight
3. The Last Arrow

Have you read any Debbie Macomber books?  She has several series that are completed..

The Navy Series - Dakota series ~  ( the Cedar Cove series is not complete yet..#10 is coming out this Fall )

However, the Cedar Cove Series is very good!  The Blossom series.. here is her website link for more information ~

http://www.debbiemacomber.com/index.cfm

Melissa

The  MacGregors by Nora Roberts and The Stanislaskis by Nora Roberts. 

Not sure if this series is complete but... Guilty Pleasure and Wicked Pleasure by Lora Leigh are in my opinion reallly good too! :)

I second that on the Bridgerton's by Julia Quinn!  I loved that series!!! :)