NEW YORK, April 13 (Reuters) - Signet Jewelers Ltd (SIG.N) said on Tuesday 13 April it named Ronald Ristau chief financial officer, effective June 26.

Ristau succeeds Walker Boyd, who will retire on June 25, the operator of the Kay Jewelers chain said in a statement.

Ristau, who was a former CFO of women's apparel retailer New York & Co (NWY.N), will join Signet on April 15 as CFO designate and will be based in Akron, Ohio. (Reporting by Dhanya Skariachan, editing by Gerald E. McCormick)