An integrated heatsink and antenna structure that is suitable for inclusion in small and midsized computing devices. The integrated heatsink and antenna structure may include heatsink portions and radio frequency antenna portions. The heatsink portions may provide a path for dissipating thermal energy or heat generated by the components in the device (e.g., printed circuit boards, processors, voltage amplifiers, etc.), and the radio frequency (RF) antenna portions may allow the device to send and receive wireless communications. The integrated heatsink and antenna structure may be formed so that radio frequency antenna portions operate to improve the thermal performance of the heatsink portions and/or so that the heatsink portions operate to improve the antenna properties (e.g., radiation patterns, radiation efficiency, bandwidth, input impedance, polarization, directivity, gain, beam-width, voltage standing wave ratio, etc.) of the radio frequency antenna portions.