Lao is the official language, and outside hotels and tour desks you will hear little else. That is less of a problem than it sounds. Lao people are patient, prices can be shown on a calculator, and a phone with the right apps carries most conversations. Here is what actually works.
Where English works
In central Vientiane and Vang Vieng, hotel staff, tour agencies, ride-hailing drivers, and many restaurants manage basic English. In local markets, small eateries, and anywhere off the tourist trail, expect very little. Older signage and some older people use French, a legacy of the colonial era, but it is not a practical fallback. Speak slowly, use simple words, and do not raise your voice — volume does not help.
Thai as a bridge
Lao and Thai are closely related, and most Lao people understand spoken Thai from decades of Thai television and music. If you speak some Thai, use it. Thai visitors will find they can get by almost everywhere.
Ten phrases worth learning
Sabaidee (ສະບາຍດີ) — hello. Khop jai (ຂອບໃຈ) — thank you; khop jai lai lai for many thanks. Baw pen nyang (ບໍ່ເປັນຫຍັງ) — it's fine / no problem. Thao dai? (ເທົ່າໃດ) — how much? Sep lai (ແຊບຫຼາຍ) — delicious. Hong nam yu sai? (ຫ້ອງນ້ຳຢູ່ໃສ) — where is the toilet? Baw phet (ບໍ່ເຜັດ) — not spicy. Baw ao (ບໍ່ເອົາ) — I don't want it. Khor thot (ຂໍໂທດ) — sorry / excuse me. La kon (ລາກ່ອນ) — goodbye. Lao is tonal, so your pronunciation will be imperfect, but the effort is always noticed and usually returned with a smile and a better price.
Translation apps
Google Translate supports Lao text translation. Camera translation of menus and signs depends on your device and app version, so check on your own phone before you fly whether Lao is offered; downloading the Lao language pack in advance also lets it work without data. Papago, popular with Korean travelers, does not support Lao — use Google Translate for Lao and keep Papago for Thai or English. Typing and showing the screen is often clearer than the speech function, which struggles with tones and background noise.
WhatsApp beats phone calls
Most Lao businesses, including nearly every partner listed on TheLaoHub, prefer a WhatsApp message to a call. Text lets both sides use a translator, send a photo or a map pin, and re-read what was agreed. A quick message confirming price and time before you set off avoids most misunderstandings.
Addresses and directions
Street addresses are rarely used. Give landmarks instead — a temple, a market, a hotel — and have your hotel write your destination in Lao script on a card or in your phone. Show it to the driver rather than trying to pronounce it. A map pin in a ride-hailing app removes the problem entirely.
Numbers and prices
At markets, prices are often typed into a calculator or a phone and shown to you; do the same when you counter. Kip amounts have many zeros, so confirm whether a quote is per item, per kilo, or per person. Lao numerals: neung (1), song (2), sam (3), si (4), ha (5), hok (6), jet (7), paet (8), kao (9), sip (10). Knowing these alone makes shopping noticeably easier.
When it still isn't working
Smile, slow down, and try another channel: a photo of what you want, a translated line on your screen, a gesture. Lao culture values calm; frustration shown openly closes doors, patience opens them.