EX-99.906CERT

                                  CERTIFICATION

James F. Laird, Chief Executive Officer, and Gary R. Young, Chief Financial
Officer of Diamond Hill Funds (the "Registrant"), each certify to the best of
his knowledge that:

1. The Registrant's periodic report on Form N-CSR for the period ended December
31, 2005 (the "Form N-CSR") fully complies with the requirements of Sections
15(d) of the Securities Exchange Act of 1934, as amended; and

2. The information contained in the Form N-CSR fairly presents, in all material
respects, the financial condition and results of operations of the Registrant.

Chief Executive Officer                 Chief Financial Officer
Diamond Hill Funds                      Diamond Hill Funds

/s/ James F. Laird                      /s/ Gary R. Young
- --------------------------              ---------------------------
James F. Laird                          Gary R. Young
Date:  March 3, 2006                    Date:  March 3, 2006

A signed original of this written statement required by Section 906 of the
Sarbanes-Oxley Act of 2002 has been provided to Diamond Hill Funds and will be
retained by Diamond Hill Funds and furnished to the Securities and Exchange
Commission (the "Commission") or its staff upon request.

This certification is being furnished to the Commission solely pursuant to 18
U.S.C. ss. 1350 and is not being filed as part of the Form N-CSR filed with the
Commission.