Pathira Vasan Dushmantha Chameera (পাথিরা ভাসান দুষ্মন্ত চামিরা), is a professional Sri Lankan cricketer who plays for all three formats for the national team, He is a Right-arm fast bowler and also a handy lower order batsman. He plays cricket domestically for Nondescripts Cricket Club. He made his international debut for Sri Lanka in January 2015. He is currently the most experienced fast bowler in the Sri Lanka Cricket team. He missed many opportunities to play for Sri Lanka due to his injuries.

In March 2018, Chameera was named in Colombo's squad for the 2017–18 Super Four Provincial Tournament. The following month, he was also named in Colombo's squad for the 2018 Super Provincial One Day Tournament.

In August 2018, Chameera was named in Galle's squad the 2018 SLC T20 League. In March 2019, he was named in Galle's squad for the 2019 Super Provincial One Day Tournament. In October 2020, he was drafted by the Colombo Kings for the inaugural edition of the Lanka Premier League. In January 2018, he was bought by the Rajasthan Royals in the 2018 IPL auction. However, he missed the first weeks of the tournament with a back injury.

A right-arm fast bowler, Chameera made his ODI debut for Sri Lanka against New Zealand on 29 January 2015. He took his first international wicket in his first over when he bowled Ross Taylor, and he also dismissed Grant Elliott, with Sri Lanka winning the match.

Chameera was selected to the 2015 ICC Cricket World Cup, but did not take part in first few matches. He was picked for the squad against Sri Lanka's last pool A match against Scotland, where he took 3 wickets for 51 runs. Sri Lanka went on to win the match.