The Lidder or Liddar (Kashmiri: لیٔدٕر, IPA: /lʲədɨr/, Urdu: لدر, romanized: liddar, Sanskrit: लम्बोदरी, romanized: Lambodarī) is a 73 km (45 mi) river situated in the Kashmir Valley of Jammu and Kashmir, India.

It originates from the Kolahoi Glacier and feeds the Jhelum River in Mirgund Khanabal, at an altitude of 1,615 metres (5,299 ft).

[1][2] Lidder is a corruption of the local Sanskrit name Lambodari (लम्बोदरी) meaning 'long bellied goddess'.

It covers 30 kilometres (19 mi) before reaching Pahalgam where it joins the major tributary of the East Lidder from Sheshnag Lake.

It has crystal blue-coloured water and Pahalgam is situated in the center of Lidder Valley.