To find data entry clients, reach out to previous clients for new projects and opportunities. Contact friends and acquaintances and ask for referrals. Use online platforms like Upwork and Fiverr, as well as job boards and freelance websites, to search for data entry jobs. Utilize social media like Twitter and LinkedIn to network and find clients. In addition, consider sending cold emails or making cold calls to potential clients. Research well and approach reputable companies for data entry projects.