Lasham is a small village and civil parish in the East Hampshire district of Hampshire, England. It is northwest of Alton, east of the A339 road between Basingstoke and Alton. In the centre of the village is the church of St Mary (C of E) and a public house, the Royal Oak. The Bentworth Stream formerly ran through the village until its drainage in the latter half of the 20th century.
The nearest railway station is in Alton, southeast of the village. The nearest shop is Avenue Garden Centre on Avenue Road, which sells a wide range of goods and includes a restaurant. This is accessed from the village though Highfield Road to the northeast.