Lalkar (Challenge) is a 1972 Indian Hindi-language war action film produced and directed by Ramanand Sagar.

[2] The film had music composed by Kalyanji Anandji and the lyricists were Hasrat Jaipuri, Indeevar, Mahendra Dehlvi and Kulwant Jani.

[5] Stated to be the costliest war film produced at the time,[6] it starred Dharmendra, Rajendra Kumar, Mala Sinha and Kumkum in lead roles.

The rest of the cast included Nazir Hussain, Sujit Kumar, Ramesh Deo, Dara Singh and Agha.

[7] Two sons of Colonel Kapoor, one in the Army and One in the Air force are in love with the same girl.