Bitching Betty is the slang term some pilots and crew (mainly North American) use when referring to the voice warnings used by some aircraft systems.

The name "Betty" is a generic popular traditional name from the American culture, and is not derived from more recent uses of the word to describe an attractive female (in reference to Betty Rubble of The Flintstones).

Today, at least in some aircraft systems, the annuciation voice may be either male or female. In some cases, this may be selected according to pilot preference.^{[citation needed]} If the voice is female it may be referred to as Bitching Betty; if the voice is male it may be referred to as Bitching Bob, a male voice is used in the BAE Hawk.

In the UK the term Nagging Norah is sometimes used, and in New Zealand the term used is Hank the Yank on Boeing aircraft. The voice warning system used on London Underground trains, which also uses a female voice, is known to some staff as Sonya as it "'s on ya nerves".

There are two notable systems which today are normally found in most commercial and military aircraft, the TCAS (Traffic Collision Avoidance System) and TAWS/EGPWS (Terrain Avoidance Warning System / Enhanced Ground Proximity Warning System) which provide warnings and spoken (verbal) resolution instructions.