Donal O'Sullivan (31 December 1930 – 30 August 2001) was an Irish Gaelic footballer who played at club level with Lees and at inter-county level with the Cork senior football team. He usually lined out as a full-back. O'Sullivan, who is regarded as one of Cork's all-time greatest players, also served as a Gaelic Athletic Association administrator at county and inter-provincial levels. O'Sullivan's grandsons, Niall and Rory Scannell, have represented Munster and Ireland in rugby union.