Patrick Johnston may refer to:
Patrick Johnston (Canadian politician), Canadian administrator and former politician Patrick Johnston (American politician) (born 1946), former Democratic state legislator in the State of California Patrick Johnston (medieval courtier), Scottish courtier and producer of plays Patrick G. Johnston (1958–2017), Northern Irish academic; vice-chancellor of Queens University Belfast, 2014-2017 Sir Patrick Johnston (Scottish politician), Scottish merchant and politician
See also Patrick Johnson (disambiguation) Patrick Johnstone, a Canadian municipal politician