This is a list of Harlequin Romance novels released in 2004.
| Number | Title | Author | Date/Year released |
|---|
| # 3779 | The Frenchman's Bride | Rebecca Winters | January 2004 |
| # 3780 | The Italian's Baby | Lucy Gordon | January 2004 |
| # 3781 | His Potential Wife | Grace Green | January 2004 |
| # 3782 | The Wedding Wish | Ally Blake | January 2004 |
| # 3783 | Part-Time Fiance | Leigh Michaels | February 2004 |
| # 3784 | Her Royal Baby | Marion Lennox | February 2004 |
| # 3785 | The Boss's Convenient Proposal | Barbara McMahon | February 2004 |
| # 3786 | A Bride At Birralee | Barbara Hannay | February 2004 |
| # 3787 | Her Boss's Marriage Agenda | Jessica Steele | March 2004 |
| # 3788 | Bride Of Convenience | Susan Fox | March 2004 |
| # 3789 | A Spanish Honeymoon | Anne Weale | March 2004 |
| # 3790 | Assignment: Marriage | Jodi Dawson | March 2004 |
| # 3791 | The Duke's Proposal | Sophie Weston | April 2004 |
| # 3792 | Mission: Marriage | Hannah Bernard | April 2004 |
| # 3793 | The Man From Madrid | Anne Weale | April 2004 |
| # 3794 | A Wedding At Windaroo | Barbara Hannay | April 2004 |
| # 3795 | Rafael's Convenient Proposal | Rebecca Winters | May 2004 |
| # 3796 | A Marriage Worth Waiting For | Susan Fox | May 2004 |
| # 3797 | Her Boss's Baby Plan | Jessica Hart | May 2004 |
| # 3798 | A Family Of His Own | Liz Fielding | May 2004 |
| # 3799 | Rinaldo's Inherited Bride | Lucy Gordon | June 2004 |
| # 3800 | The Takeover Bid | Leigh Michaels | June 2004 |
| # 3801 | A Professional Engagement | Darcy Maguire | June 2004 |
| # 3802 | Marriage Material | Ally Blake | June 2004 |
| # 3803 | Innocent Mistress | Margaret Way | July 2004 |
| # 3804 | Her Stand-In Groom | Jackie Braun | July 2004 |
| # 3805 | The Best Man's Baby | Darcy Maguire | July 2004 |
| # 3806 | The Pregnant Tycoon | Caroline Anderson | July 2004 |
| # 3807 | Gino's Arranged Bride | Lucy Gordon | August 2004 |
| # 3808 | The Baby Proposal | Rebecca Winters | August 2004 |
| # 3809 | A Convenient Groom | Darcy Maguire | August 2004 |
| # 3810 | The Tycoon's Dating Deal | Nicola Marsh | August 2004 |
| # 3811 | His Heiress Wife | Margaret Way | September 2004 |
| # 3812 | The Englishman's Bride | Sophie Weston | September 2004 |
| # 3813 | Marriage In Name Only | Barbara McMahon | September 2004 |
| # 3814 | The Honeymoon Proposal | Hannah Bernard | September 2004 |
| # 3815 | The Husband Sweepstake | Leigh Michaels | October 2004 |
| # 3816 | His Pretend Wife | Lucy Gordon | October 2004 |
| # 3817 | The Billionaire Takes A Bride | Liz Fielding | October 2004 |
| # 3818 | The Wedding Contract | Nicola Marsh | October 2004 |
| # 3819 | To Catch A Groom | Rebecca Winters | November 2004 |
| # 3820 | Christmas Eve Marriage | Jessica Hart | November 2004 |
| # 3821 | A Surprise Christmas Proposal | Liz Fielding | November 2004 |
| # 3822 | His Convenient Fiancee | Barbara McMahon | November 2004 |
| # 3823 | The Australian Tycoon's Proposal | Margaret Way | December 2004 |
| # 3824 | A Pretend Engagement | Jessica Steele | December 2004 |
| # 3825 | The Game Show Bride | Jackie Braun | December 2004 |
| # 3826 | The Pregnancy Surprise | Caroline Anderson | December 2004 |
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