Star singers, also known as Epiphany singers, or Star boys' singing procession (England), are children and young people walking from house to house with a star on a rod and often wearing crowns and dressed in clothes to resemble the Three Magi (variously also known as Three Kings or Three Wise Men). The singing processions have their roots in an old medieval ecclesiastical play, centred on the Biblical Magi of the Christmas story in the Gospel of Matthew (Matthew 2:1–28), appropriate to Epiphany. It is observed usually during the period between 27 December and 6 January (the feast of the Epiphany).

In Scandinavia and Central Europe a special set of songs, distinct from Christmas carols has developed in this context. In England, the liturgical drama developed from being performed by cathedral schoolboys in the 16th century to become a more secular mystery drama, also containing some ordinary Christmas songs and carols. Historically performed by boys and male adolescents only, it is nowadays performed by children and young people of both sexes in most regions where the tradition is alive.

At a synod in Konstanz in Germany at Christmas in 1417 the British clergies performed the Star boy drama for the rest of the participants at the meeting. They wore expensive costumes and had a large shining star. The performance was a huge success at the church conference and could have been one of the main reasons for the growing popularity of the drama in post-medieval Europe.

The importance of the Twelfth Day and the feast of the Epiphany grew with the introduction of the Gregorian calendar as the day, according to the earlier Julian calendar, is also the Old Christmas Day.

After the Reformation in the 16th century, pupils of the cathedral schools in Protestant nations conducted these processions to raise funds to replace the church support that had disappeared. The custom passed further on to the general populace as a kind of narrative folk drama, but seems to have declined in its original form since the late 19th century.

Since then the singing procession has become common in many parts of Europe (both in Catholic and Protestant areas) and in Russia. In most countries it is no longer restricted to boys, but children or both sexes participate. In Germany, Austria and Belgium organisations centrally organise the processions, collecting money for charity or international aid projects, leading to widespread support of the custom.

In Germany, the Czech Republic, and Austria, Epiphany singing is performed at or close to Epiphany (6 January) and has developed into a nationwide custom, where the children of both sexes call on every door and are given sweets and money for charity projects - mostly in aid of poorer children in other countries.

A tradition in much of Central Europe involves writing a blessing above the main door of the home, which incorporates the letters C, M, and B and the current year: for example in the year 2014 it would have been "20 ✝ C ✝ M ✝ B ✝ 14". The initials refer to the Latin phrase Christus mansionem benedicat ("May Christ bless this house"); folkloristically the letters are often interpreted as the names of the Three Wise Men (Caspar, Melchior, Balthasar). In Catholic parts of Germany and in Austria, this is done by the Sternsinger (literally "Star singers"). After having sung their songs, recited a poem, and collected donations for children in poorer parts of the world, they will chalk the blessing on the top of the door frame or place a sticker with the blessing.