Adrian Philip Bird CB is a senior civil servant who serves as Chief of Defence Intelligence at the UK Ministry of Defence.
Bird joined GCHQ and served in a variety of roles there, latterly as a director-general, before being appointed Chief of Defence Intelligence at the Ministry of Defence in September 2022.
In December 2025, Bird disclosed that there had been a 50% increase in threats identified over the previous year.
Bird was appointed Companion of the Order of the Bath (CB) in the 2022 New Year Honours.