The effects of (LULC) change on soil erosion and sediment yield is getting global attention. Soil erosion is one of the critical environmental problems worldwide with high severity in developing countries. Understanding the effects of LULC changes on soil erosion and sediment yield is not only to identify challenges and targeting interventions but also for watershed management planning. This study investigated the effects of LULC changes on soil erosion and sediment yield in the maybar watershed during the 1990- 2020 periods. The hybrid land use classification technique for classifying time series Land sat images (1990, 2000, 2010 and 2020) were used. The land use types in the study area were categorized into five cultivated, dense forest, grazing, open forest and settlement. The InVEST SDR model for estimating the rate of soil erosion and sediment yield were employed in the study. The results showed that in the past three decades, dense forest and settlement areas increased with 23ha, 29.31ha, 42.65ha, 45.44ha and 15ha, 21.36ha, 22.4ha, 24ha in the study period of 1990, 2000, 2010 and 2020 respectively. While areas occupied by grazing land and open forest land decreases from 12ha, 6.4ha, 3ha, 2ha and 36.6ha, 32ha, 24ha, 19.2ha in the study period of 1990, 2000, 2010 and 2020 respectively. On the other hand cultivated land decreased 29.67ha, 27.2ha, 24.22ha in the study period of 1990, 2000 and 2010 respectively but increased 25.63ha in 2020 study period. The LULC changes have also decrease the annual mean soil erosion rate from 28.9t/ ha/year in 1990 25.12 t/ha /year in 2000 and 21.06 t/ha/year in 2010 and increase in the year of 2020 to 26.16 t/ha/year. The sediment yield is also decrease from 6.4t/ ha/year in 1990, 4.8 t/ha/year in 2000 and 3.6 t/ha/year in 2010 and increase in the year of 2020 to 5.07 t/ha/year. Information on soil loss and sediment export is essential to conservation interventions in a given watershed.