Certification Pursuant to Rule 30a-2(b) under the Investment Company Act of 1940

and Section 906 of the Sarbanes-Oxley Act of 2002

I, Henry Gabbay, President and Principal Executive Officer of BlackRock Funds^SM (the “Registrant”), certify to the best of my knowledge that:

1. The Form N-CSR of the Registrant for the period ended September 30, 2006 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

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

Date: December 7, 2006	/s/ Henry Gabbay
	Henry Gabbay, President and Principal Executive Officer

I, Donald C. Burke, Treasurer and Principal Financial Officer of BlackRock Funds^SM (the “Registrant”), certify to the best of my knowledge that:

1. The Form N-CSR of the Registrant for the period ended September 30, 2006 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

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

Date: December 7, 2006	/s/ Donald C. Burke
	Donald C. Burke, Treasurer and Principal Financial Officer