As part of its Boundless campaign, the University of Washington is positioning itself as a way through which donors can support the causes they care about--like curing cancer, sustainable fishing practices, or increasing access to higher education. I constructed a thesaurus of philanthropic interests for UW Advancement so they can connect the causes donors care about to the departments that need their support. Upon implementation, my thesaurus will be used to index marketing content and tag prospect database records based on interests. My thesaurus is a first step towards helping donors connect with the right philanthropic opportunities easily and efficiently.