As many as 20% have shared their post-nuptial travels with pals, the survey by foreign exchange company Travelex showed.
And nearly half of couples said they would consider a buddymoon if it saved them money.
The poll showed that some couples would even let family members tag along, but 5% would only go away with others if it meant a saving of up to 75%.
For buddymooners the most popular destination was Dubai, followed by Thailand, France, South Africa and Turkey.
Travelex said these were all destinations where the pound has strengthened against the local currency, giving UK holidaymakers more spending power.
Elvin Eldic, from Travelex, said: "With young couples feeling the growing financial squeeze of tying the knot, it's unsurprising that many are bucking traditional honeymoon trends in order to rein in the cost of getting married.
"It makes perfect sense to continue the celebrations with loved ones, while sharing the costs. In recent months the pound has improved significantly against most popular currencies."
Hotel booking company Mr & Mrs Smith said: "We've seen increasing popularity for couples sharing honeymoons."