A saltire, or Saint Andrew's Cross, is a heraldic symbol in the form of a diagonal cross ☓ or letter x. Saint Andrew is said to have been martyred on such a cross. In the Russian Orthodox tradition, the phrase Saint Andrew's Cross is often equated with the Orthodox cross, because of the tradition that Saint Andrew used such a cross when preaching in the respective regions. The Saltire design is however distinct from that of the Orthodox Cross.

It appears in numerous flags, including those of Scotland and Jamaica, and other coats of arms and seals. A variant, also appearing on many past and present flags and symbols, is the Cross of Burgundy flag.

A warning sign in the shape of a saltire is also used to indicate the point at which a railway line intersects a road at a level crossing.

In Unicode, the cross is encoded at U+2613 ☓ saltire (HTML: ☓) and U+0078 x latin small letter x (HTML: x).

The saltire appears on vexilla that are represented consistently on coinage of Christian emperors of Rome, from the fourth century. Anne Roes found it on coins of Constantius II, Valentinian^{[disambiguation needed ]}, Jovian, Gratianus, Valens, Arcadius, Constantine III, Jovinus, Theodosius I, Eugenius and Theodosius II, though she searched only coins at the British Museum. In the ninth and tenth century the saltire was revived in Constantinople as a symbol of Christian-imperial power.

Mark Beaumont (born 1 January 1983) is a record-breaking long-distance British cyclist. He held the record for cycling round the world, completing his 18,297 miles (29,446 km) route on 15 February 2008, having taken 194 days and 17 hours. On 18 February 2010 Beaumont completed his latest quest, cycling from Anchorage, Alaska, USA to Ushuaia in Southern Argentina, for a BBC Television series.

Beaumont was home-schooled until the age of 11 by his mother, Una. He was then educated at the High School of Dundee. He has two sisters called Heather and Hannah. Aged 15, he completed a solo ride the length of Great Britain from John o'Groats to Land's End. He also has a degree in Politics from Glasgow University.

To qualify for the world record, Beaumont was required to travel a route that passes through two approximately antipodal points. The route began and ended in Paris, France, taking in 20 countries across Europe, the Middle East, India, Asia, Australasia and North America. The bicycle used for the attempt was a Koga-Miyata with a Rohloff internal gearing hub, which consumed the spokes yet was used to build a new wheel, that held up. As well as the bike, he was carrying 66 pounds (30 kg) of equipment such as tools, cameras and other equipment to support him on the journey.