The 1984 Pittsburgh Pirates season was the 103rd season of the franchise; the 98th in the National League. This was their 15th season at Three Rivers Stadium. The Pirates finished sixth and last in the National League East with a record of 75–87.
Regular season
Season standings
Record vs. opponents
Game log
|- bgcolor="ffbbbb" | 1 || April 3 || @ Padres || 1–5 || Show || Rhoden (0–1) || — || 44,553 || 0–1 |- bgcolor="ffbbbb" | 2 || April 5 || @ Padres || 6–8 || DeLeon || Scurry (0–1) || Gossage || 19,361 || 0–2 |- bgcolor="ccffcc" | 3 || April 6 || @ Dodgers || 3–1 || Tudor (1–0) || Welch || Guante (1) || 39,820 || 1–2 |- bgcolor="ccffcc" | 4 || April 7 || @ Dodgers || 3–0 || Candelaria (1–0) || Pena || Robinson (1) || 32,403 || 2–2 |- bgcolor="ccffcc" | 5 || April 8 || @ Dodgers || 5–2 || Rhoden (1–1) || Valenzuela || Guante (2) || 41,550 || 3–2 |- bgcolor="ffbbbb" | 6 || April 10 || @ Giants || 3–4 || Krukow || McWilliams (0–1) || Minton || 6,837 || 3–3 |- bgcolor="ffbbbb" | 7 || April 11 || @ Giants || 1–2 (10) || Lavelle || Guante (0–1) || — || 8,773 || 3–4 |- bgcolor="ffbbbb" | 8 || April 13 || @ Cardinals || 1–4 || LaPoint || Candelaria (1–1) || Sutter || 45,453 || 3–5 |- bgcolor="ffbbbb" | 9 || April 14 || @ Cardinals || 5–7 || Cox || Rhoden (1–2) || Sutter || 23,602 || 3–6 |- bgcolor="ffbbbb" | 10 || April 15 || @ Cardinals || 0–1 || Rucker || McWilliams (0–2) || Sutter || 24,099 || 3–7 |- bgcolor="ffbbbb" | 11 || April 17 || Phillies || 1–4 || Hudson || Tudor (1–1) || Holland || 34,114 || 3–8 |- bgcolor="ccffcc" | 12 || April 18 || Phillies || 6–3 || Candelaria (2–1) || Koosman || Robinson (2) || 2,752 || 4–8 |- bgcolor="ffbbbb" | 13 || April 20 || @ Cubs || 4–5 (10) || Stoddard || Tekulve (0–1) || — || 22,049 || 4–9 |- bgcolor="ccffcc" | 14 || April 21 || @ Cubs || 8–5 || DeLeon (1–0) || Noles || Robinson (3) || 21,936 || 5–9 |- bgcolor="ccffcc" | 15 || April 24 || @ Phillies || 3–2 || Candelaria (3–1) || Koosman || Tekulve (1) || 14,096 || 6–9 |- bgcolor="ffbbbb" | 16 || April 25 || @ Phillies || 7–8 || McGraw || Tunnell (0–1) || Holland || 20,622 || 6–10 |- bgcolor="ccffcc" | 17 || April 27 || Cubs || 3–2 || Rhoden (2–2) || Rainey || Tekulve (2) || 9,057 || 7–10 |- bgcolor="ffbbbb" | 18 || April 28 || Cubs || 1–7 || Sanderson || McWilliams (0–3) || — || 17,317 || 7–11 |- bgcolor="ffbbbb" | 19 || April 29 || Cubs || 1–2 || Trout || Candelaria (3–2) || Smith || 13,397 || 7–12 |- bgcolor="ffbbbb" | 20 || April 30 || Cardinals || 3–5 || Sutter || Tunnell (0–2) || — || 4,097 || 7–13 |-