Shavuot is a two-day Jewish holiday that falls on the Hebrew calendar dates of Sivan 6–7. Here are the coinciding secular dates for the upcoming years:

Shavuot 2021 begins at sundown on Sunday, May 16, and concludes at nightfall on Tuesday, May 18. The 10 Commandments are read on May 17. Yizkor is on May 18.

Shavuot in the Coming Years

2022:   June 4-6 / 10 Commandments: June 5 / Yizkor: June 6

2023:   May 25-27 / 10 Commandments: May 26 / Yizkor: May 27

2024:   June 11-13 / 10 Commandments: June 12 / Yizkor: June 13

2025:   June 1-3 / 10 Commandments: June 2 / Yizkor: June 3

Note: The Jewish calendar date begins at sundown of the night beforehand. Thus all holiday observances begin at sundown on the secular dates listed, with the following day being the first full day of the holiday. Jewish calendar dates conclude at nightfall.

Also note: In Israel, the holiday is observed for just one day, and Yizkor is recited shortly after the 10 Commandments are read.

Shavuot Info

Prepping for Shavuot? Here are some handy links for you:
What Is Shavuot?
Detailed Shavuot Calendar
Why Eat Dairy on Shavuot?

See Also

When is Rosh Hashanah in 2021, 2022, 2023, 2024 and 2025?
When is Yom Kippur in 2021, 2022, 2023, 2024 and 2025?
When is Sukkot in 2021, 2022, 2023, 2024 and 2025?
When is Shemini Atzeret / Simchat Torah in 2021, 2022, 2023, 2024 and 2025?
When is Chanukah in 2021, 2022, 2023, 2024 and 2025?
When is Purim in 2021, 2022, 2023, 2024 and 2025?
When is Passover in 2021, 2022, 2023, 2024 and 2025?
When is the Ninth of Av in 2021, 2022, 2023, 2024 and 2025?