A compact and efficient diode‐pumped intracavity frequency‐doubled Yb3+:SrY4(SiO4)3O (Yb:SYS) green laser at 534 nm is demonstrated. With 17.6 W of diode pump power and the frequency doubling crystal LiB3O5 (LBO), a maximum output power of 415 mW in the green spectral range at 534 nm has been achieved, corresponding to an optical‐to‐optical conversion efficiency of 2.4%; the output power stability over 4 hour is better than 3.5%. To the best of our knowledge, this is first work on intracavity frequency doubling of a diode pumped Yb:SYS laser at 1068 nm. (© 2011 by Astro Ltd., Published exclusively by WILEY‐VCH Verlag GmbH & Co. KGaA) (© 2011 by Astro Ltd., Published exclusively by WILEY‐VCH Verlag GmbH & Co. KGaA)