Sharma was called up for the
2024 tour of Zimbabwe and made his international debut in the first match on 6 July. He scored his maiden T20I century in the second match of the series, scoring 100 runs at the
Harare Sports Club. He became the fastest Indian to score a century in terms of number of innings. He also became the fourth batter to hit a maiden T20I century before 24 years of age. In 2025, he hit the highest individual score for India in T20Is by scoring 135 runs from 54 balls against
England. His innings included 13 sixes and 7 fours. Sharma hit the second-highest score against England as well as the second-fastest half-century and century for India by balls faced. He also hit the most sixes for India in an innings in men's T20Is and had the highest run-rate during a 100+ run
partnership for India in T20Is. He jumped to the 2nd spot in the men's T20I world rankings after the century, becoming India's number one batter. In 2025, Sharma reached the number one world ranking in the T20I format and became the youngest Indian to do so. At the
2025 Asia Cup, Sharma broke the record of the most runs scored in a T20I edition of the tournament. He became the highest run-scorer of the edition with 314 runs in seven innings. He was also awarded the player of the tournament for his performance. His successful campaign led to him achieving the highest-ever rating points in T20I history with a total of 931 ranking points. He is also currently the number 25th best all rounder in the world in T20I. On 21 January 2026 in the first T20I
between India and New Zealand at Nagpur, Sharma scored a match-high 84 runs. His innings laid a solid foundation for India with aggressive stroke play and quick running. India won by 48 runs, taking a 1–0 lead in the 5-match series. During the 3rd T20I
between India and New Zealand in Guwahati, Sharma hit the second fastest T20I 50 in the history of Indian cricket (14 balls), as he and
Suryakumar Yadav chased down the target of 154 in 10 overs, giving India an unassailable 3-0 series lead. Sharma finished with an unbeaten 68* off just 20 balls. He is the only men's player from a full member nation to have made three 50+ scores in the powerplay in T20I's. During the
2026 T20 World Cup, Sharma endured a dismal run in the group stage, missing a match due to illness and getting out for a duck in each of the remaining 3 games he played. With that, he holds the record of most ducks by a batter to start off a T20 World Cup campaign (3). He also has the most ducks for an Indian opener in the T20WC overall. In the
final, he scored 52 runs off 21 balls during a 98-run partnership with
Sanju Samson, with it becoming the fastest half-century in the tournament from 18 balls. ==International centuries==