Exhibit 99.906CERT

EXHIBIT 12 (b)

RULE 30a-2(b) CERTIFICATIONS

In connection with the Report of Cohen & Steers REIT and Utility Income Fund, Inc. (the “Company”) on Form N-CSR as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Adam M. Derechin, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1)           The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as applicable; and

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

Adam M. Derechin

Chief Executive Officer

Date: March 6, 2006

EXHIBIT 12 (b)

RULE 30a-2(b) CERTIFICATIONS

In connection with the Report of Cohen & Steers REIT and Utility Income Fund, Inc. (the “Company”) on Form N-CSR as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Jay J. Chen, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1)           The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as applicable; and

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

Jay J. Chen

Chief Financial Officer

Date: March 6, 2006