Date: 08, 10 & 12 May 2018
Venue: Altice Arena (Lisbon, Portugal)
Voting system: 1-8, 10 & 12 points. Jury + Televoting 50%
Number of countries: 43
Hosts: Catarina Furtado, Daniela Ruah, Filomena Cautela and Silvia Alberto
Slogan: All Aboard!
Scoreboard:
Semi-Final 1
| Country | Performer | Song | Points | Place | ||
| 1 |  | Azerbaijan | Aisel | X My Heart | 94 | 11 |
| 2 |  | Iceland | Ari Ólafsson | Our Choice | 15 | 19 |
| 3 |  | Albania | Eugent Bushpepa | Mall | 162 | 8 |
| 4 |  | Belgium | Laura Groeseneken | A Matter Of Time | 91 | 12 |
| 5 |  | Czech Republic | Mikolas Josef | Lie To Me | 232 | 3 |
| 6 |  | Lithuania | Ieva Zasimauskaitė | When We’re Old | 119 | 9 |
| 7 |  | Israel | Netta Berzilai | Toy | 283 | 1 |
| 8 |  | Belarus | Alekseev | Forever | 65 | 16 |
| 9 |  | Estonia | Elina Nechayeva | La Forza | 201 | 5 |
| 10 |  | Bulgaria | Equinox | Bones | 177 | 7 |
| 11 |  | FYR Macedonia | Eye Cue | Lost and found | 24 | 18 |
| 12 |  | Croatia | Franka Batelić | Crazy | 63 | 17 |
| 13 |  | Austria | Cesár Sampson | Nobody But You | 231 | 4 |
| 14 |  | Greece | Gianna Terzi | Oneiro Mou | 81 | 14 |
| 15 |  | Finland | Saara Aalto | Monsters | 108 | 10 |
| 16 |  | Armenia | Sevak Khanagyan | Qami | 79 | 15 |
| 17 |  | Switzerland | Zibbz | Stones | 86 | 13 |
| 18 |  | Ireland | Ryan O’Shaughnessy | Together | 179 | 6 |
| 19 |  | Cyprus | Eleni Foureira | Fuego | 262 | 2 |
Semi-Final 2
| Country | Performer | Song | Points | Place | ||
| 1 |  | Norway | Alexander Rybak | That´s how you write a song | 266 | 1 |
| 2 |  | Romania | The Humans | Goodbye | 107 | 11 |
| 3 |  | Serbia | Sanja Ilic & Balkanika | Nova Deca | 117 | 9 |
| 4 |  | San Marino | Jessika ft. Jenifer Brening | Who We Are | 28 | 17 |
| 5 |  | Denmark | Rasmussen | Higher Ground | 204 | 5 |
| 6 |  | Russia | Yuliya Samoylova | I Won’t Break | 65 | 15 |
| 7 |  | Moldova | DoReDos | My Lucky Day | 235 | 3 |
| 8 |  | The Netherlands | Waylon | Outlaw In ‘Em | 174 | 7 |
| 9 |  | Australia | Jessica Mauboy | We Got Love | 212 | 4 |
| 10 |  | Georgia | IRIAO | Sheni gulistvis | 24 | 18 |
| 11 |  | Poland | Gromee ft. Lukas Meijer | Light Me Up | 81 | 14 |
| 12 |  | Malta | Christabelle | Taboo | 101 | 13 |
| 13 |  | Hungary | AWS | Viszlát Nyár | 111 | 10 |
| 14 |  | Latvia | Laura Rizzotto | Funny Girl | 106 | 12 |
| 15 |  | Sweden | Benjamin Ingrosso | Dance you off | 254 | 2 |
| 16 |  | Montenegro | Vanja Radovanović | Inje | 40 | 16 |
| 17 |  | Slovenia | Lea Sirk | Hvala, ne! | 132 | 8 |
| 18 |  | Ukraine | MELOVIN | Under The Ladder | 179 | 6 |
Final
| Country | Performer | Song | Points | Place | ||
| 1 | | Ukraine | MELOVIN | Under The Ladder | 130 | 17 |
| 2 |  | Spain | Alfred & Amaia | Tu Canción | 61 | 23 |
| 3 | | Slovenia | Lea Sirk | Hvala, ne! | 64 | 22 |
| 4 | | Lithuania | Ieva Zasimauskaitė | When We’re Old | 181 | 12 |
| 5 | | Austria | Cesár Sampson | Nobody But You | 342 | 3 |
| 6 | | Estonia | Elina Nechayeva | La Forza | 245 | 8 |
| 7 | | Norway | Alexander Rybak | That´s how you write a song | 144 | 15 |
| 8 |  | Portugal | Cláudia Pascoal | O Jardim | 39 | 26 |
| 9 |  | United Kingdom | SuRie | Storm | 48 | 24 |
| 10 | | Serbia | Sanja Ilic & Balkanika | Nova Deca | 113 | 19 |
| 11 |  | Germany | Michael Schulte | You Let Me Walk Alone | 340 | 4 |
| 12 | | Albania | Eugent Bushpepa | Mall | 184 | 11 |
| 13 |  | France | Madame Monsieur | Mercy | 173 | 13 |
| 14 | | Czech Republic | Mikolas Josef | Lie To Me | 281 | 6 |
| 15 | | Denmark | Rasmussen | Higher Ground | 226 | 9 |
| 16 | | Australia | Jessica Mauboy | We Got Love | 99 | 20 |
| 17 | | Finland | Saara Aalto | Monsters | 46 | 25 |
| 18 | | Bulgaria | Equinox | Bones | 166 | 14 |
| 19 | | Moldova | DoReDos | My Lucky Day | 209 | 10 |
| 20 | | Sweden | Benjamin Ingrosso | Dance you off | 274 | 7 |
| 21 | | Hungary | AWS | Viszlát Nyár | 93 | 21 |
| 22 | | Israel | Netta Berzilai | Toy | 529 | 1 |
| 23 | | The Netherlands | Waylon | Outlaw In ‘Em | 121 | 18 |
| 24 | | Ireland | Ryan O’Shaughnessy | Together | 136 | 16 |
| 25 | | Cyprus | Eleni Foureira | Fuego | 436 | 2 |
| 26 |  | Italy | Ermal Meta & Fabrizio Moro | Non Mi Avete Fatto Niente | 308 | 5 |
Host
Catarina Furtado, Daniela Ruah, Filomena Cautela and Silvia Alberto
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