Yes, proof of sufficient funds is a mandatory requirement for a Cyprus Tourist Visa. You must demonstrate that you have adequate financial resources to cover all expenses during your stay, including accommodation, food, transportation, and other costs. Accepted documents include original bank statements for the last three months, duly stamped and signed by the bank, salary slips, income tax returns, and a sponsorship letter if your trip is being funded by someone else. It is advisable to carry original bank statements rather than photocopies to ensure they are accepted during the application review process.