Giyus K'safim ("fundraising") refers to the process of collecting money for a particular purpose, such as charitable, communal, religious, or organizational needs. Fundraising has historically been essential in sustaining synagogues, yeshivas, charitable institutions, and communal projects.

Fundraising is often conducted by individuals or committees who seek contributions from community members, philanthropists, or external donors to support initiatives that benefit the community or uphold religious and educational activities. The process may include personal solicitations, campaigns, events, and appeals to ensure that necessary funds are collected for maintaining and developing communal or institutional functions.