From March to November, 299 cruises, across 14 itineraries, will be available, including six sailings exclusively for solo travellers.
The itineraries cover countries such as France, Germany, Portugal, Hungary and the Netherlands, and include an eight-day Douro, Porto and Salamanca sailing from £1,569pp.
The line will also offer an eight-day Burgundy, the River Rhone and Provence itinerary, which features seven visits and tours, from £1,569pp.
The Blue Danube river cruise is an eight-day voyage with calls in Vienna, Budapest and Salzburg. Fares start at £1,519pp.
The Amsterdam, Kinderdijk and the Dutch Bulbfields five-day cruise features five visits and tours and costs £929pp.
Prices include return flights, Eurostar travel on select itineraries, full board and scheduled visits and tours.
An optional onboard drinks package is available to purchase, which offers a selection of drinks during lunch and dinner. The package starts from £59pp for a five-day sailing.
All itineraries are similarly sailing in 2022 and are available to book now.
Katja Hildebrandt, head of cruise at Riviera Travel, said the line has launched its European programme "earlier than ever before" to help meet demand.
"From the Douro to the Danube, and the Rhine to the Rhone, we’re pleased to be able to offer an extensive range of river cruises along Europe’s most incredible waterways during 2023," she added.
"Guests can effortlessly soak up the views from on-board as they enjoy all-inclusive dining and impeccable service from our wonderful crews."
