Oliver James Hannon-Dalby (born 20 June 1989, Halifax, West Yorkshire, England) is an English cricketer, currently with Warwickshire having previously played for Yorkshire County Cricket Club.
He is a left-handed batsman and a right arm medium-fast bowler.
Hannon-Dalby was a graduate of the Yorkshire Cricket Academy.
He made his first-class debut against Surrey on 21 May 2008, where his first wicket was that of prolific runscorer Mark Ramprakash.He gained his first five wicket haul of 5 for 68 against Warwickshire in the first match of the 2010 County Championship season.
He followed this up in the second match with another haul, coincidentally also 5 for 68, against Somerset at Headingley.