Taken from the Buy Guides feature of the Lonely Planet iPhone application; as there doesn’t seem to be a list anywhere else. The application came with Mexican Phrasebook and San Francisco City Guide pre installed.

• Amsterdam City Guide
• Arabic Phrasebook
• Auckland City Guide
• Bangkok City Guide
• Barcelona City Guide
• Beijing City Guide
• Belfast City Guide
• Berlin City Guide
• Boston City Guide
• Budapest City Guide
• Buenos Aires City Guide
• Cantonese Phrasebook
• Cape Town City Guide
• Chiang Mai City Guide
• Chicago City Guide
• Copenhagen City Guide
• Czech Phrase Book
• Delhi City Guide
• Dubai City Guide
• Dublin City Guide
• Edinburgh City Guide
• French Phrasebook
• German Phrasebook
• Glasgow City Guide
• Greek Phrasebook
• Havana City Guide
• Hong Kong City Guide
• Istanbul City Guide
• Italian Phrasebook
• Japanese Phrasebook
• Korean Phrasebook
• Kuala Lumpur Phrasebook
• Kyoto City Guide
• Las Vegas City Guide
• Lisbon City Guide
• London City Guide
• Lyon City Guide
• Macau City Guide
• Madrid City Guide
• Manchester City Guide
• Mandarin Phrasebook
• Marrakesh City Guide
• Melbourne City Guide
• Mexico City Guide
• Miami City Guide
• Moscow City Guide
• Munich City Guide
• New Orleans City Guide
• New York City City Guide
• Oslo City Guide
• Paris City Guide
• Polish Phrasebook
• Portuguese Phrasebook
• Prague City Guide
• Rio De Janeiro City Guide
• Rom City Guide
• Seattle City  Guide
• Seoul City Guide
• Shanghai City Guide
• Singapore City Guide
• Spanish Phrasebook
• St Petersburg City Guide
• Stockholm City Guide
• Stuttgart City Guide
• Swahili Phrasebook
• Sydney City Guide
• Thai Phrasebook
• Tokyo City Guide
• Toronto City Guide
• Turkish Phrasebook
• Vancouver City Guide
• Venice City Guide
• Vienna City Guide
• Vietnamese Phrasebook
• Washington DC City Guide