| Election Name: | 1958 United States Senate election in Maryland |
| Country: | Maryland |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1952 United States Senate election in Maryland |
| Previous Year: | 1952 |
| Next Election: | 1964 United States Senate election in Maryland |
| Next Year: | 1964 |
| Election Date: | November 4, 1958 |
| Image1: | Jamesglennbeall.jpg |
| Nominee1: | James Glenn Beall |
| Party1: | Republican Party (US) |
| Popular Vote1: | 544,354 |
| Percentage1: | 51.18% |
| Nominee2: | Thomas D'Alesandro |
| Party2: | Democratic Party (US) |
| Popular Vote2: | 452,938 |
| Percentage2: | 48.82% |
| Map Size: | 275px |
| U.S. Senator | |
| Before Election: | James Glenn Beall |
| Before Party: | Republican Party (US) |
| After Election: | James Glenn Beall |
| After Party: | Republican Party (US) |
The 1958 United States Senate election in Maryland was held on November 4, 1958.
Senator James Glenn Beall narrowly defeated Baltimore Mayor Thomas D'Alesandro for re-election to a second term. Beall's victory came despite a national landslide for Senate Democrats.
| J. Glenn BeallRepublican | Thomas D'AlesandroDemocratic | Margin | TotalVotes Cast | ||||||
|---|---|---|---|---|---|---|---|---|---|
| % | % | % | |||||||
| Allegany | 15144 | 62.60% | 9047 | 37.40% | 6097 | 25.20% | 24191 | ||
| Anne Arundel | 21425 | 57.31% | 15962 | 42.69% | 5463 | 14.61% | 37387 | ||
| Baltimore (City) | 272177 | 54.58% | 226469 | 45.42% | 45708 | 9.17% | 498646 | ||
| Baltimore (County) | 72514 | 57.35% | 53936 | 42.65% | 18578 | 14.69% | 126450 | ||
| Calvert | 2053 | 48.49% | 2181 | 51.51% | -128 | -3.02% | 4234 | ||
| Caroline | 2821 | 53.42% | 2460 | 46.58% | 361 | 6.84% | 5281 | ||
| Carroll | 8259 | 65.70% | 4312 | 34.30% | 3947 | 31.40% | 12571 | ||
| Cecil | 4791 | 50.22% | 4749 | 49.78% | 42 | 0.44% | 9540 | ||
| Charles | 4180 | 51.32% | 3965 | 48.68% | 215 | 2.64% | 8145 | ||
| Dorchester | 3556 | 44.47% | 4440 | 55.53% | -884 | -11.06% | 7996 | ||
| Frederick | 11233 | 64.61% | 6153 | 35.39% | 5080 | 29.22% | 17386 | ||
| Garrett | 3731 | 66.53% | 1877 | 33.47% | 1854 | 33.06% | 5608 | ||
| Harford | 8115 | 57.54% | 5988 | 42.46% | 2127 | 15.08% | 14103 | ||
| Howard | 5402 | 60.03% | 3597 | 39.97% | 1805 | 20.06% | 8999 | ||
| Kent | 2830 | 53.76% | 2434 | 46.24% | 396 | 7.52% | 5264 | ||
| Montgomery | 43840 | 53.62% | 37913 | 46.38% | 5927 | 7.25% | 81753 | ||
| Prince George's | 26688 | 42.35% | 36324 | 57.65% | -9636 | -15.29% | 63012 | ||
| Queen Anne's | 2109 | 45.12% | 2565 | 54.88% | -456 | -9.76% | 4674 | ||
| St. Mary's | 2722 | 41.49% | 3838 | 58.51% | -1116 | -17.01% | 6560 | ||
| Somerset | 3228 | 47.28% | 3600 | 52.72% | -372 | -5.45% | 6828 | ||
| Talbot | 4061 | 61.02% | 2594 | 38.98% | 1467 | 22.04% | 6655 | ||
| Washington | 15288 | 58.79% | 10718 | 41.21% | 4570 | 17.57% | 26006 | ||
| Wicomico | 5682 | 52.46% | 5149 | 47.54% | 533 | 4.92% | 10831 | ||
| Worcester | 2505 | 48.43% | 2667 | 51.57% | -162 | -3.13% | 5172 | ||
| Total | 544354 | 54.58% | 452938 | 45.42% | 91416 | 9.17% | 997292 | ||