Yes, the owner or administrator of a guest WiFi network can see your browsing history, but the extent of what they can see depends on the website's encryption. Because most websites today use HTTPS encryption, the WiFi owner generally cannot see the specific content you are viewing (like the text of an email or your search queries). However, they can see the domain names you visit (e.g., facebook.com or bankofamerica.com), the exact time you connected, and the total amount of data you used. This metadata is captured at the router level and is inherent to how networks function. If you visit an unencrypted "HTTP" site, the owner can potentially see the full URL path and everything you do on that page. In 2026, many commercial guest networks (like those in hotels or airports) require you to agree to terms that explicitly allow them to track and potentially sell this "anonymized" data to advertisers. Using a VPN is the only way to fully hide your browsing activity from a network owner.