Phnom Penh is one of Southeast Asia's easiest solo cities: cheap, compact, and full of long-stay expats and backpackers who talk to strangers. Base yourself near the riverside or BKK1, walk the Sisowath promenade at dawn, and let conversation find you.
The city's most reliably social hostel: dorm beds from about 24,000 riel, rooftop pool bar, and a nightly sign-up board for group dinners and pub crawls. Reception runs a 6pm meet-up so nobody eats alone on night one. Open 24 hours.
A long-running Khmer canteen where solo diners perch at the counter tables. Nom banh chok (rice noodles in green fish gravy) runs about 12,000 riel, beef lok lak about 20,000. Plastic stools, fan-cooled, English menu on the wall. Open 07:00–21:00.
The safest neighbourhood for a first solo wander: leafy Streets 278, 288 and 308 lined with cafés, bookshops and NGO offices, quiet enough to walk with a phone out. Loop Street 63 to Street 278 to Wat Lanka in about 90 minutes on foot.
Second-hand English bookshop with a café upstairs and communal tables — the standard solo-traveller refuge in BKK1. Iced coffee about 8,000 riel, used paperbacks 12,000–24,000 riel with a buy-back deal. Wi-Fi is fast and nobody rushes you.
Half-day class starting with a guided market run at Psar Boeung Keng Kang, then hands-on fish amok and green mango salad. Groups run six to ten people, so you cook beside strangers and eat together. Around 100,000 riel including market tour and lunch.
Social-enterprise café near the riverside that trains at-risk young Cambodians as baristas. Staff practise English with customers, so a coffee (about 9,000 riel) turns into a twenty-minute conversation. Communal wooden table at the front seats eight.
Drop-in Khmer boxing sessions with local fighters, no experience needed — pad work, clinch drills and skipping in an open-air gym. Around 32,000 riel per class including glove hire, sessions at 07:00, 12:00 and 17:30. Water and wraps sold at the desk.
The backpacker spine between Street 19 and Norodom: cheap draught Angkor at roughly 2,000 riel, pool tables, and rooftop bars where solo drinkers get folded into groups. Top Banana's fifth-floor terrace is the reliable place to arrive alone at dusk.
A flat, traffic-free island 15km upriver: local ferry from Prek Leap costs about 2,000 riel with a bike, and village silk weavers demonstrate looms in their stilt houses. Rentals near the pier run 8,000–12,000 riel a day. Easy and safe to ride alone.
Training restaurant in a colonial villa where former street youth learn hospitality. Solo tables in the garden are standard, and servers explain each dish. Fish amok about 28,000 riel, crispy tarantula about 24,000. Open 11:00–21:00.
Free public Vipassana sessions open to foreigners, held in the pagoda hall — typically Monday, Thursday and Saturday afternoons, roughly an hour of sitting followed by a monk-led Q&A in English. Cover shoulders and knees; donation box at the door.
Open-air rooftop above the quay with a clear line of sight to Wat Ounalom and the Tonlé Sap confluence. Bar stools make arriving alone unremarkable; cocktails around 28,000 riel, Angkor draught about 12,000. Opens 17:00, busiest 18:30–20:00.