Leonard Paul Blair (born April 12, 1949) is an American prelate of the Roman Catholic Church, who served as archbishop of the Archdiocese of Hartford in Connecticut from December 2013 to May 2024.

[5] On April 28, 2004, Blair suspended the ministry of Gerald Robinson, a diocese priest, after his arrest on murder charges.

[7] On May 9, 2005, Blair directed the Sisters of St. Francis to cancel a three-day workshop by New Ways Ministry at the order's campus in Tiffin, Ohio.

[9] Blair submitted his report to the CDR in 2010, noting that "The current doctrinal and pastoral situation of LCWR is grave and a matter of serious concern.

"[10] In April 2012, the CDR appointed Archbishop J. Peter Sartain, assisted by Blair and Bishop Thomas J. Paprocki, to create a plan for the overhaul of the LCWR.

[12] Blair stated: As best we can determine, at present the Komen Foundation does not fund cancer research that employs embryonic stem cells.

[13]Blair's statement also referred to Komen's relationship with Planned Parenthood, a provider of abortion and women's health services.

Because of these factors, Blair urged Catholic donors, both corporate and individually, to consider alternative organizations when supporting breast cancer research.