The Electronics and Radar Development Establishment (LRDE) is a laboratory of the Defence Research & Development Organisation (DRDO), India. Located in C.V. Raman Nagar, Bengaluru, Karnataka, its primary function is the research and development of radars and related technologies. It was founded by S. P. Chakravarti, the father of Electronics and Telecommunication engineering in India, who also founded DLRL and DRDL.

LRDE is sometimes mis-abbreviated as "ERDE". To distinguish between "Electrical" and "Electronic", the latter is abbreviated with the first letter of its Latin root (Elektra). The same approach is used for the DLRL. The LRDE is India's premier radar design and development establishment and is deeply involved in Indian radar efforts. Its primary production partners include Bharat Electronics Limited (BEL) and various private firms like Mistral Solutions in Bengaluru, Astra Microwave in Hyderabad, and Data Patterns in Chennai.