William Henry Ashe à Court-Holmes later Holmes-à Court, 2nd Baron Heytesbury (11 July 1809 – 21 April 1891) was a British peer and Conservative Member of Parliament.

Lord Heytesbury married Elizabeth Holmes, daughter of Sir Leonard Worsley-Holmes, 9th Baronet, in 1833.

He assumed by royal licence the additional surname of Holmes after that of à Court at the same time.

[2] In 1860 he changed the family name, by royal licence, from à Court-Holmes to Holmes-à Court.

Lord Heytesbury died in April 1891, aged 81, and was succeeded by his grandson, William Holmes-à Court.