Lucas Barker (born 23 June 1995) is a cricketer who plays for Guernsey. He played in the 2014 ICC World Cricket League Division Five tournament. In May 2019, he was named in Guernsey's squad for the 2019 T20 Inter-Insular Cup. He made his Twenty20 International (T20I) debut for Guernsey against Jersey on 31 May 2019. The same month, he was named in Guernsey's squad for the Regional Finals of the 2018–19 ICC T20 World Cup Europe Qualifier tournament in Guernsey.