Olivia Smart (born 1 April 1997) is a British-Spanish ice dancer, who currently competes with Tim Dieck for Spain.

In the 2012–2013 season, the duo missed the JGP series and finished twenty-second at the 2013 World Junior Championships in Milan.

In 2013–2014, Smart/Buckland placed seventh at both of their JGP assignments, Poland and the Czech Republic, and finished tenth at the 2014 World Junior Championships in Sofia, Bulgaria.

In November, they won silver medals at the International Cup of Nice and NRW Trophy before taking the British national title in the absence of longstanding champions Coomes/Buckland.

On 13 December 2015, it was announced that Smart had teamed up with Spanish ice dancer Adrián Díaz and that they wished to represent Spain.

[7] On 15 January 2016, Smart announced that the British skating association had released her and that she and Díaz would train in Montreal, Quebec, Canada, under Marie-France Dubreuil, Patrice Lauzon, and Romain Haguenauer.

Later that month, Federación Española Deportes de Hielo (FEDH) selected them to compete at the 2017 World Championships, the main Olympic-qualifying competition.

In July 2017, FEDH announced that Spain's Olympic spot would go to the team which received the highest combined score at the 2017 CS Golden Spin of Zagreb and Spanish Championships.

Later that month, they won the Spanish national title by a 3.23-point margin, resulting in a final deficit of 0.95 points.

At the onset of the 2018–19 season, they were assigned to two Grand Prix events, the Skate Canada and Internationaux de France, finishing fifth at the former and seventh at the latter.

[15] After winning the Spanish national title for the second time, they finished eighth at the 2020 European Championships, below Hurtado/Khaliavin in seventh place.

[20] Smart/Díaz began the Olympic season at the 2021 CS Autumn Classic International, where they won the silver medal, setting new personal best scores in the free dance and overall in the process.

[23] Competing on the Grand Prix at the 2021 Skate America, they placed fourth in the rhythm dance, 1.27 points behind Canadian training partners Fournier Beaudry/Sørensen.

[24] Their Zorro free dance received a standing ovation from the audience, with Smart commenting that the "reaction of the crowd made it all worthwhile and so memorable.

[34] With the end of her partnership with Díaz, Smart sought out other opportunities, and was announced as a new professional skater for series 15 of ITV's Dancing on Ice.

[35][36] At the same time, Smart began to develop a new competitive partnership with German ice dancer Tim Dieck.

The two explored options to represent either Spain or Germany, but the Spanish federation offered superior financial support, and they ultimately requested that Dieck be released by the German Ice Skating Union.

"[39] Smart and Dieck made their competitive debut on the Challenger circuit, finishing in fourth place at the 2023 CS Autumn Classic International.

Following controversy around the criteria used to arrive at this result, on December 27 the Spanish federation announced that Smart/Dieck would instead be given the country's lone World Championship berth.