Peter Sherlock Wyse Jackson is an Irish botanist and environmentalist. He is president of the Missouri Botanical Garden, and holder of the George Engelmann chair in botany at Washington University in St. Louis.

The National Botanic Gardens is a botanical garden in Glasnevin, 5 km north-west of Dublin city centre, Ireland. The 19.5 hectares are situated between Glasnevin Cemetery and the River Tolka where it forms part of the river's floodplain.