Revellers will welcome in 2014 at celebrations around Scotland.
Around 80,000 people are expected in Edinburgh city centre for the Hogmanay street party.
Pet Shop Boys are headlining a Concert in the Gardens with guests The 1975 and Nina Nesbitt, while the street party will have music on three stages, with performers including Django Django and King Creosote.
Traditional Scottish music will be playing at The Keilidh, an outdoor dance event.
As the clock strikes midnight a spectacular fireworks display from Edinburgh Castle and Calton Hill will welcome in the new year.
The evening's events are part of a three-day celebration in the city which began with a torchlight procession through the centre of Edinburgh last night and includes the loony dook in the River Forth tomorrow.
The city's celebrations will mark the start of Homecoming Scotland 2014, a year-long programme of events alongside the Commonwealth Games and Ryder Cup.
In Glasgow bagpipers, drummers and dancers will perform during the city's ''Hogmanayday'' between midday and 10pm.
The free event in George Square includes a giant ceilidh and stalls selling Scottish produce.
In previous years Glasgow hosted a traditional Hogmanay party similar to Edinburgh, with headline bands, but it was scrapped in 2011 because the city council said it was no longer providing value for money.
This year's event has acts from Commonwealth countries performing, marking Glasgow's hosting of the 2014 Games. It will feature African drumming, Indian dancing, Caribbean music and Scottish ceilidh music.
Council leader Gordon Matheson said: ''Scotland is renowned the world over for celebrating Hogmanay in style. As the country's biggest city, about to enter our biggest year on the world stage, we are preparing for Hogmanayday: a special way to see out 2013.
''2014 promises to be all about the Commonwealth so we are seeing out an old year and eagerly anticipating the coming of a new one by adding a twist to our traditional Scottish celebrations.``
In Stirling more than 5,000 people are expected to attend an outdoor party at Stirling Castle Esplanade, headlined by Deacon Blue.
It will also feature performances by Scottish singer-songwriter Dougie MacLean, Bags of Rock and local group Rail Fan.
A special Homecoming Hogmanay fireworks sequence will take place above Stirling Castle and the Wallace Monument at 20:14, as well as in Inverness and Edinburgh, before a fireworks display above Stirling Castle at the bells.
Fiona Anderson of management company Zisys Events said: ``The final preparations are under way for Stirling's Hogmanay. We've got a fantastic evening lined up, with something for everyone - we believe it will be our best year yet."
``Tickets have been selling really well and there are still a small number available. Anyone who wants to join us for a truly memorable evening should buy their ticket now - before it's too late.''
Street performers, including fire-dancers and a piper, will entertain people as they make their way to the esplanade where gates open at 8.30pm with Rail Fan kicking off the evening at 9pm.
Simple Minds will headline the Open Air in the Square event in the Aberdeenshire town of Stonehaven, where the fireball swinging procession will also take place in the old town.
After days of heavy rain in many parts of Scotland the weather is expected to improve in time for this evening's celebrations.
Nick Prebble, a forecaster with MeteoGroup, said: ``There will be clear periods with a few showers mostly towards the west. Edinburgh might have a largely dry night and Stonehaven as well."
``However it will be cold, with temperatures just above zero degrees centigrade.''