Background: Cancer disproportionately affects older adults, yet research defining the supportive care needs of these patients is lacking. We sought to examine associations between geriatric impairments, quality of life (QOL), and physical and psychological symptom burden in older adults with newly diagnosed incurable gastrointestinal (GI) cancer. Methods: We prospectively enrolled patients age ≥70 within 8 weeks of diagnosis of incurable GI cancer at Massachusetts General Hospital from 10/2015-11/2016. We used surveys to assess geriatric impairments (Vulnerable Elders Survey-13 [range 0-10, scores ≥3 identify patients with impairments), QOL (EORTC QLQ-C30 [range 0-100, higher scores indicate better QOL]), physical symptoms (Edmonton Symptom Assessment System [range 0-10, higher scores indicate greater symptom burden]) and psychological symptoms (Geriatric Depression Scale, [range 0-15, higher scores indicate greater depression symptoms]). We used descriptive statistics to determine differences in patient characteristics by the presence or absence of geriatric impairments. We used linear regression adjusted for age, employment, cancer type, and comorbidity to examine associations between geriatric impairments, QOL, and physical and psychological symptom burden. Results: We enrolled 50 of 58 (86%) patients approached (mean age = 78.7; 52% with pancreatic cancer). Nearly half (46%) screened positive for geriatric impairments; these patients were older (81.7 vs 76.1, p < .01) and had more comorbid conditions (2.4 vs 1.2, p = .01). On linear regression, patients with geriatric impairments reported worse QOL across all domains (General QOL: B = -28.3, p < .01; Physical: B = -36.8, p < .01; Role: B = -36.8, p < .01; Emotional: B = -30.1, p < .01; Cognitive: B = -17.8, p = .03; Social: B = -39.7, p < .01), higher depression scores (B = 5.1, p < .01) and worse fatigue (B = 4.6, p < .01), drowsiness (B = 4.0, p < .01), appetite (B = 3.8, p < .01), and pain (B = 2.7, p = .02). Conclusions: Older adults with advanced cancer experience considerable unmet supportive care needs, particularly those with geriatric impairments. Future research is needed to assess older patients for geriatric impairments and address their unique palliative and supportive care needs.