The 1884 Pittsburg Alleghenys season was the 3rd season of the Pittsburg Alleghenys franchise. The Alleghenys finished eleventh in the American Association with a record of 30–78. == Game log ==
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July: 8–13 (Home: 3–1 ; Away: 5–12)
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August: 3–14 (Home: 2–6 ; Away: 1–8)
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September: 6–12 (Home: 3–4 ; Away: 3–8)
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October: 1–8 (Home: 1–8 ; Away: 0–0)
|- style="text-align:center;" ! colspan=9 | ''Legend: = Win = Loss = Tie |}