The limited edition 46g Yorkie Orange bar (70p) and 72g Yorkie Orange Duo bar (85p) will be available from 10 May.
Nestlé says orange-flavoured chocolate saw a 23% sales growth in 2020.
Amy Kendall, brand manager for Yorkie, said: “Yorkie has been a consumer favourite for 45 years, and we’re very excited to introduce a brand new twist on this chocolate classic.
“Delicious chunks of our signature Yorkie creamy milk chocolate are enlivened with irresistible orange to create a moreish taste sensation that we hope will become a firm favourite.”