Abstract: Electronic devices may be provided with near field communications capabilities. A near field communications antenna may be formed from multiple inductive components. The inductive components may include a speaker coil. One or more switches may be provided in the near field communications antenna to adjust the inductance of the near field communications antenna during different modes of operation. An audio circuit may be used to generate audio signals. A first transmitter may be used to transmit near field hearing aid signals through the near field communications antenna. A second transmitter may be used to transmit near field communications signals to external equipment such as near field communications point of sale equipment. Switching circuitry may be used to selectively couple the audio circuit, the first transmitter, and the second transmitter to the near field communications antenna.