BACKGROUND: Although both motor and cognitive impairments are frequently observed following stroke, these are often managed as distinct entities, and there is little evidence regarding how they are related. The aim of this study was to describe the prevalence of concurrent motor and cognitive impairments three months after stroke and to examine how motor performance was associated with memory, executive function and global cognition. METHODS: The Norwegian Cognitive Impairment After Stroke (Nor-COAST) study is a prospective multicentre cohort study including patients hospitalized with acute stroke. The National Institutes of Health Stroke Scale (NIHSS) was used to measure stroke severity, and function was measured by the Modified Rankin Scale (mRS). Motor and cognitive functions were assessed three months post-stroke using the Montreal Cognitive Assessment (MoCA), Trail Making Test Part B (TMT-B), 10-Word List Recall (10WLR), Short Physical Performance Battery (SPPB), dual-task cost (DTC) and grip strength. Cut-offs were set according to current recommendations. Associations were examined using linear regression with the cognitive tests as dependent variables and motor domains as covariates, adjusted for age, sex, education and stroke severity. RESULTS: Of 567 participants included, 242 (43%) were women, mean (SD) age was 72.2 (11.7) years, 416 (75%) had an NIHSS score ≤ 4 and 475 (84%) had an mRS score of ≤ 2. Prevalence of concurrent motor and cognitive impairment ranged from 9.5% for DTC and 10WLR to 22.9% for grip strength and TMT-B. The SPPB was associated with the MoCA (regression coefficient B=0.465, 95%CI [0.352, 0.578]), TMT-B (B=-9.494, 95%CI [-11.726, -7.925]) and 10WLR (B=0.132, 95%CI [0.054, 0.211]). Grip strength was associated with the MoCA (B=0.075, 95%CI [0.039, 0.112]), TMT-B (B=-1.972, 95%CI [-2.672, -1.272]) and 10WLR (B=0.041, 95%CI [0.016, 0.066]). Higher DTC was associated with more time needed to complete the TMT-B (B=0.475, 95%CI [0.075, 0.875]) but not with the MoCA or 10WLR.CONCLUSION: Three months after suffering mainly minor strokes, 30–40% of participants had motor or cognitive impairments, while 20% had concurrent impairments. Motor performance was associated with memory, executive function and global cognition. The identification of concurrent impairments could be relevant for preventing functional decline.Clinical Trial Registration: ClinicalTrials.gov Identifier: NCT02650531