This is a list of Harlequin Romance novels released in 2004. (Main index: List of Harlequin Romance novels)
| Number | Title | Author | Date | Citations |
|---|---|---|---|---|
| The Italian's Baby | Lucy Gordon | January 2004 | |
| His Potential Wife | Grace Green | January 2004 | |
| The Wedding Wish | Ally Blake | January 2004 | |
| Part-Time Fiancé | Leigh Michaels | February 2004 | |
| Her Royal Baby | Marion Lennox | February 2004 | |
| The Boss's Convenient Proposal | Barbara McMahon | February 2004 | |
| A Bride At Birralee | Barbara Hannay | February 2004 | |
| Her Boss's Marriage Agenda | Jessica Steele | March 2004 | |
| Bride Of Convenience | Susan Fox | March 2004 | |
| A Spanish Honeymoon | Anne Weale | March 2004 | |
| Assignment: Marriage | Jodi Dawson | March 2004 | |
| The Duke's Proposal | Sophie Weston | April 2004 | |
| Mission: Marriage | Hannah Bernard | April 2004 | |
| The Man From Madrid | Anne Weale | April 2004 | |
| A Wedding At Windaroo | Barbara Hannay | April 2004 | |
| Rafael's Convenient Proposal | Rebecca Winters | May 2004 | |
| A Marriage Worth Waiting For | Susan Fox | May 2004 | |
| Her Boss's Baby Plan | Jessica Hart | May 2004 | |
| A Family Of His Own | Liz Fielding | May 2004 | |
| Rinaldo's Inherited Bride | Lucy Gordon | June 2004 | |
| The Takeover Bid | Leigh Michaels | June 2004 | |
| A Professional Engagement | Darcy Maguire | June 2004 | |
| Marriage Material | Ally Blake | June 2004 | |
| Innocent Mistress | Margaret Way | July 2004 | |
| Her Stand-In Groom | Jackie Braun | July 2004 | |
| The Best Man's Baby | Darcy Maguire | July 2004 | |
| The Pregnant Tycoon | Caroline Anderson | July 2004 | |
| Gino's Arranged Bride | Lucy Gordon | August 2004 | |
| The Baby Proposal | Rebecca Winters | August 2004 | |
| A Convenient Groom | Darcy Maguire | August 2004 | |
| The Tycoon's Dating Deal | Nicola Marsh | August 2004 | |
| His Heiress Wife | Margaret Way | September 2004 | |
| The Englishman's Bride | Sophie Weston | September 2004 | |
| Marriage In Name Only | Barbara McMahon | September 2004 | |
| The Honeymoon Proposal | Hannah Bernard | September 2004 | |
| The Husband Sweepstake | Leigh Michaels | October 2004 | |
| His Pretend Wife | Lucy Gordon | October 2004 | |
| The Billionaire Takes A Bride | Liz Fielding | October 2004 | |
| The Wedding Contract | Nicola Marsh | October 2004 | |
| To Catch A Groom | Rebecca Winters | November 2004 | |
| Christmas Eve Marriage | Jessica Hart | November 2004 | |
| A Surprise Christmas Proposal | Liz Fielding | November 2004 | |
| His Convenient Fiancée | Barbara McMahon | November 2004 | |
| The Australian Tycoon's Proposal | Margaret Way | December 2004 | |
| A Pretend Engagement | Jessica Steele | December 2004 | |
| The Game Show Bride | Jackie Braun | December 2004 | |
| The Pregnancy Surprise | Caroline Anderson | December 2004 | |