Yes, many modern cruise ships now feature dedicated "Solo Cabins" (sometimes called Studio Cabins) designed specifically for one person. Historically, solo travelers were forced to pay a "single supplement" fee—essentially paying double the price to occupy a room meant for two. To fix this, cruise lines like Norwegian Cruise Line (NCL) pioneered the "Studio" concept, offering small but stylish cabins (around 100 sq ft) at a single-occupancy price point. These often include access to a private "Solo Lounge" where single travelers can socialize. Other major lines like Royal Caribbean, Celebrity, and Holland America have followed suit, retrofitting older ships or building new ones with a limited number of solo interior and even solo balcony cabins. Because these rooms are in high demand and limited supply, they often sell out months in advance. If a solo cabin is not available, look for "No Single Supplement" promotions on older ships during the off-peak season.