Tinnehinch Fishery is a private fly-fishing stretch on the River Dargle in County Wicklow, running approximately one mile downstream from Tinnehinch Bridge on the R760 near Powerscourt Estate to the top of the gorge in Dargle Glen.

Fishing is strictly fly only throughout the beat. The river is noted as one of Ireland's prime sea trout fisheries, with larger fish appearing in May and smaller fish through June, July, and August.

Spring salmon can be taken in April and May, with grilse typically running in August during wet conditions. Brown trout are also present throughout the season.