PROBLEM TO BE SOLVED: To provide an endoscope objective lens having high optical performance, in which chromatic aberration is successfully corrected over an entire range from a short wavelength range near 400 nm to a visible range, and to provide an endoscope having the endoscope objective lens.SOLUTION: An endoscope objective lens 1 is comprised of a negative front group GA, an aperture stop St, and a positive rear group GB in order from the object side. The front group GA is comprised of a negative first lens L1, and a cemented lens formed by cementing a negative second lens L2 and a positive third lens L3 together, in order from the object side. The rear group GB is comprised of a positive lens and a cemented lens formed by cementing a positive lens and a negative lens together, in order from the object side. The endoscope objective lens 1 satisfies a conditional expression (1): -0.8<；f/fA<；-0.2 and a conditional expression (2): νd2-νd3<；15.0, where f represents a focal length of the entire system, fA represents a focal length of the front group GA, νd2 represents an Abbe number of the second lens L2, and νd3 represents an Abbe number of the third lens L3.SELECTED DRAWING: Figure 1【課題】広角で波長４００ｎｍ付近の短波長域から可視域までの全域において色収差が良好に補正されて高い光学性能を有する内視鏡用対物レンズ、およびこの内視鏡用対物レンズを備えた内視鏡を提供する。【解決手段】内視鏡用対物レンズ１は、物体側から順に、負の前群ＧＡ、開口絞りＳｔ、正の後群ＧＢからなる。前群ＧＡは、物体側から順に、負の第１レンズＬ１、負の第２レンズＬ２および正の第３レンズＬ３が接合された接合レンズからなる。後群ＧＢは、物体側から順に、正レンズ、正レンズおよび負レンズが接合された接合レンズからなる。内視鏡用対物レンズ１は、全系の焦点距離ｆ、前群ＧＡの焦点距離ｆＡ、第２レンズＬ２のアッベ数νｄ２、第３レンズＬ３のアッベ数νｄ３に関する条件式（１）：－０．８＜ｆ／ｆＡ＜－０．２、および条件式（２）：｜νｄ２－νｄ３｜＜１５．０を満足する。【選択図】図１
