The susceptibility of four acariCides: Coumaphos, Diazinon, Dieldrin and Cypermethrin was determined on 14-21 days old larvae of Amblyomma variegatum. The study was carried out in four cattle-rearing areas in theAccra Plains of Ghana between 5 Jul 92 and 14Jan 94. Susceptibility was assessed by using the FAO acaricide resistant kit. Amblyomma variegatum species were resistant to DiazinonandDieldrinatall the foursites:Dawa, Abladzei, Shai-Hills and Odumse. Strangely, A. variegatum showed some resistance to Cypermethrin at the low concentration of 0.05 per cent at Abladzei, Shai-Hills and Odumse. Generally,all the larvaetestedwerehighly susceptible to Coumaphos. Introduction Ticks cause considerable losses to the livestock industry world-wide. Drummond (1993) gave three major reasons for the control of ticks in domestic animals. These were disease transmission, tick paralysis or toxicosis and tick-caused physical damage. Oppong (1966) reported on the importance of ticks in Ghana and their control. Subsequently, Bell-Sakyi et al. (1996) reported on the implications for tick control with regard to the tickborne disease heartwater in Ghana. The most popular method of controlling ticks on livestock is the application of acaricides directly to the animal host either by dipping in vats, spraying, hand dressing and, recently, by pouron acaricides (Mc Corker, 1979; De Castro & Newson, 1993). Resume KONEY, E. M. B. & NIPAH, G.: Resistance d 'Amblyomma variegatum aux acaricides de bovines dans les plaines d 'Accra du Ghana. La predisposition de quatre acaricides: Coumaphos, Diazinon, Dieldrin et Cypermethrin etait determinee sur les larves des ages de 14 a 21 de Amblyomma variegatum. L'etude se deroulait en quatre zones d'elevage des bovines dans les plaines d' Accra du Ghana de 5 Juillet 1992 au 14 Janvier 1994. La predisposition etait evaluee utilisant la trousse de FAO de la resistance a l'acaricide. Les especes d'Amblyomma variegatum etaient resistantes a Diazinon et Dieldrin a tous les quatre sites. Curieusement, A. variegatum montrait quelques resistance a Cypermethrin a une concentration de 0.05% a Abladzei, Shai Hills et Odumse. Dans I'ensemble tous les larves testees etaient considerablementpredisposees a Coumaphos. Farmers in the area where the study was carried out de-tick their cattle by hand dressing, applying diluted acaricide solutions to tick attachment sites with pieces of cloth on individual animals with high tick burdens. Generally, acaricides used by farmers and herdsmen are those available in the local markets. The range include Coumaphos, Dioxathion, Chlorfenvimphos, Benzene hexachloride, Amitrax and, more recently, the synthetic pyrethroids: Flumethrin, Cypermethrin and Deltamethrin. In many parts of the world, the development of acaricide-resistant strains has, with time, rendered one chemical agent after another ineffective (Whartson, 1983; Luguru, Banda & Pergrarn,1984; Luguru, Chizyuka &Musisi, 1983). There is very little information in the literature on tick-resist-