A total of 39 countries confirmed their participation for the Eurovision Song Contest 2010, including , which returned to the contest after its absence in . The
Lithuanian National Radio and Television (LRT) initially announced its non-participation after failing to achieve the necessary funds of 300,000
litas (
€90,000) for participation. The EBU later confirmed that would indeed participate in Oslo. Several of the performing artists had previously represented the same country in past editions.
Niamh Kavanagh had won the contest for .
Hera Björk had provided backing vocals for and . Kristján Gíslason, backing singer for Hera Björk, had represented as member of
Two Tricky. In addition,
Feminnem representing Croatia, had represented . was represented by the group
SunStroke Project, of which saxophonist
Sergey Stepanov became an
Internet meme as the "Epic Sax Guy", after performing their entry "
Run Away" at the final of the contest. Thirty-four countries participated in the semi-finals of the contest. The semi-final allocation draw took place on 7 February 2010, while the draw for the running order was held on 23 March 2010. To keep tension high, the qualifiers were announced in random order in the semi-finals, and scores were published online only after the final took place. This practice would be used for all of the following contests aswell.
Other countries Active EBU members The EBU announced that they would work harder to bring back , , and to the 2010 contest. In September 2009 the EBU's director Bjørn Erichsen stated during an EBU press conference that "Austria [would] be back", and that the EBU "[had] reasons to believe that Luxembourg and Monaco" were also to participate; "now we are only missing Italy". In late October 2009, the 2010 contest project manager
Jon Ola Sand stated that "countries such as Monaco and Luxembourg [had] indicated that they [wished] to participate in next year's competition in Norway". However, the representatives of the broadcasters of Austria, Monaco, and Luxembourg denied participation in the 2010 contest. Wolfgang Lorenz, the programme director of the Austrian broadcaster (ORF), informed that they would not take part stating that the contest had been "ruined by the regulations".
Télé Monte Carlo (TMC) also declared that they would not be returning for the 2010 edition, mainly due to a lack of finances to send a Monegasque entry. The
RTL Group announced that they were having serious discussions regarding a possible comeback for for the first time since , but later confirmed that they would not be present for the 2010 contest either. (SMRTV) also considered returning in 2010 for ; however, after deliberations with Italian artists, including Italian sister duo
Paola & Chiara, they informed to withhold returning after failing to receive funding from the Sammarinnese parliament or sponsors. EBU had talks to Liechtenstein's only broadcaster
1FLTV for them to join the EBU, and become a part of the Eurovision Song Contest. 1FLTV's programme director Peter Kölbel had confirmed interest in their participation as soon as full EBU membership is granted, which may have happened in December 2009. Thus they were getting ready to debut in 2010, considering a national final concept similar to the German version of the
Idol series – (DSDS). In November 1FLTV decided against applying for EBU membership in December for financial reasons, ruling out a debut at the 2010 contest. From July to December 2009, four countries who participated in announced their non-participation in 2010: , the , , and . == Format ==