- Public House
- Pullman
- Pulman Berth
- Purser
- Quad
- Quadricycle
- Quarantine
- Quarter-Deck
- Quay
- Queens Highway
- Quick Release
- Quote
- Rabies
- Race
- Racking Policy
- Radar
- Raft
- Railcard
- Railtrack
- Railway
- Rake-Off
- Ramadan
- Ramjet
- Rapid Transit
- Re-Book
- Reception
- Recompression
- Recompression Chamber
- Reconfirmation
- Recreational Vehicle
- Red And Green System
- Red Carpet
- Red Crescent
- Red Eye
- Red Light District
- Red Run
- Reef
- Refuelling Stop
- Regime
- Register
- Registered Baggage
- Regulator
- Reissue
- Relief Map
- Remark
- Renaissance
- Rental Day
- Repatriation
- Representative
- Republic
- Request
- Request Stop
- Reservation
- Reservation System
- Resort
- Resort Condomium
- Rest House
- Retail Travel Agent
- Return Check-In
- Revalidation
- Revalidation Sticker
- Reverse Thrust
- Richter Scale
- Rickshaw
- Rift Valley
- Rigging
- Right Of Way
- River
- Riviera
- Road
- Road Train
- Road Warrior
- Roaring Forties
- Rolling Stock
- Roll On Roll Off
- Romanesque
- Roman Numerals
- Rooming List
- Room Night
- Rotating Wing Aircraft
- Rounding
- Round The World
- Routeing
- Rover Ticket
- Rudder
- Rule Of The Road
- Rural
- Rust Belt
- Sabbatical
- Sabre
- Safari
- Safety Announcement
- Safety Deposit
- Sailing Ticket
- Sailplane
- Sales Agency Agreement
- Salinity
- Sally Port
- Saloon
- Salt
- Salt Flat
- Salvage Tug
- Samovar
- Sargasso Sea
- Satellite State
- Satellite Ticket Printer
- Satnav
- Saturation Diving
- Savannah
- Saxon
- Scale Of Map
- Scandinavia
- Scheduled Service
- Scheduled Territories
- Schooner
- Season
- Seasonality
- Season Ticket
- Seating Plan
- Seat Belt
- Seat Only
- Seat Rotation
- Sea Cock
- Sea Legs
- Sea Sickness
- Sea Travel
- Sea View
- Second Class
- Sector
- Security Tax
- Sedan
- Segment
- Seiche
- Sejour
- Self-Catering
- Self-Righting
- Selling Point
- Semaphore
- Serein
- Serial Number
- Serviced Acommodation
- Service Charge
- Service Station
- Sex Tourism
- Shakedown Cruise
- Shanty
- Shantytown
- Shore Excursions
- Short Break
- Short Takeoff And Landing
- Shoulder Season
- Shuttle Service
- Sidereal Time
- Siding
- Siesta
- Silicon Valley
- Silver Service
- Single Chair
- Single Occupancy Rate
- Single Supplement
- Sinic
- Site Of Special Scientific Interest
- Six Pack Chair
- Skeleton Coast
- Ski-Bob
- Skiable Vertical
- Skidoo
- Skipper
- Skirt
- Skis
- Ski Evolutif
- Ski Poles
- Slave Coast
- Sleeper
- Sleigh
- Slip-Coach
- Slot
- Smallpox
- Sneak Bar
- Snorkel
- Snow-Blindness
- Snowdrift
- Snowfield
- Snowline
- Snowmobile
- Snowplough
- Snowshoe
- Solar Day
- Solstice
- Somali Current
- Son Et Lumiere
- Soup
- Southern Cone
- Southern Cross
- South America
- South Equatorial Current
- Souvenir
- Space Coast
- Spaghetti Junction
- Spar
- Spartan
- Special Interest Holidays
- Spice
- Split Ticketing
- Sporting Attraction
- Spot Height
- Spouse
- Spring Tide
- Square-Rigged
- Stabiliser
- Stabilisers
- Stagecoach
- Stage Decompression
- Stalactite
- Stalagmite
- Stall
- Stamp
- Standby Fare
- State
- Stateroom
- Status Box
- Steam-Hauled
- Steamship
- Steam Engine
- Steerage
- Steppe
- Stock
- Stopover
- Stowaway
- Stratus
- Street Furniture
- Sub-Aqua
- Subject To Load
- Submarine
- Subrogation
- Suite
- Sumerian
- Sunbelt
- Sunshine Coast
- Sunstroke
- Suntrap
- Superelevation
- Superior
- Supersonic Transport
- Superstructure
- Supervisor
- Supplementary Liability Insurance
- Surcharge
- Surface Marker Buoy
- Surface Travel